Remove experimental custom image support from LEAP

[yuvipanda]

It's currently broken, and we're past our 4 week policy for having unmerged experiments running! Let's revert it, and deploy it again once we have it working.

https://2i2c.freshdesk.com/a/tickets/848

Ref #2887
Ref #2869

[github-actions]

Merging this PR will trigger the following deployment actions.

Support and Staging deployments

Cloud Provider	Cluster Name	Upgrade Support?	Reason for Support Redeploy	Upgrade Staging?	Reason for Staging Redeploy
aws	victor	No		Yes	Core infrastructure has been modified
gcp	pangeo-hubs	No		Yes	Core infrastructure has been modified
aws	ubc-eoas	No		Yes	Core infrastructure has been modified
aws	nasa-ghg	No		Yes	Core infrastructure has been modified
gcp	qcl	No		Yes	Core infrastructure has been modified
aws	openscapes	No		Yes	Core infrastructure has been modified
gcp	leap	No		Yes	Core infrastructure has been modified
aws	smithsonian	No		Yes	Core infrastructure has been modified
gcp	callysto	No		Yes	Core infrastructure has been modified
kubeconfig	utoronto	No		Yes	Core infrastructure has been modified
gcp	catalystproject-latam	No		Yes	Core infrastructure has been modified
aws	catalystproject-africa	No		Yes	Core infrastructure has been modified
gcp	m2lines	No		Yes	Core infrastructure has been modified
aws	carbonplan	No		Yes	Core infrastructure has been modified
aws	jupyter-meets-the-earth	No		Yes	Core infrastructure has been modified
aws	nasa-veda	No		Yes	Core infrastructure has been modified
aws	gridsst	No		Yes	Core infrastructure has been modified
aws	nasa-cryo	No		Yes	Core infrastructure has been modified
aws	2i2c-aws-us	No		Yes	Core infrastructure has been modified
gcp	awi-ciroh	No		Yes	Core infrastructure has been modified
gcp	meom-ige	No		Yes	Core infrastructure has been modified
gcp	linked-earth	No		Yes	Core infrastructure has been modified
gcp	2i2c-uk	No		Yes	Core infrastructure has been modified
gcp	cloudbank	No		Yes	Core infrastructure has been modified
gcp	2i2c	No		Yes	Core infrastructure has been modified

Production deployments

Cloud Provider	Cluster Name	Hub Name	Reason for Redeploy
aws	victor	prod	Core infrastructure has been modified
gcp	pangeo-hubs	prod	Core infrastructure has been modified
gcp	pangeo-hubs	coessing	Core infrastructure has been modified
aws	ubc-eoas	prod	Core infrastructure has been modified
aws	nasa-ghg	prod	Core infrastructure has been modified
gcp	qcl	prod	Core infrastructure has been modified
aws	openscapes	prod	Core infrastructure has been modified
gcp	leap	prod	Core infrastructure has been modified
aws	smithsonian	prod	Core infrastructure has been modified
gcp	callysto	prod	Core infrastructure has been modified
kubeconfig	utoronto	prod	Core infrastructure has been modified
kubeconfig	utoronto	r-prod	Core infrastructure has been modified
gcp	catalystproject-latam	unitefa-conicet	Core infrastructure has been modified
gcp	m2lines	prod	Core infrastructure has been modified
aws	carbonplan	prod	Core infrastructure has been modified
aws	jupyter-meets-the-earth	prod	Core infrastructure has been modified
aws	nasa-veda	prod	Core infrastructure has been modified
aws	gridsst	prod	Core infrastructure has been modified
aws	nasa-cryo	prod	Core infrastructure has been modified
aws	2i2c-aws-us	researchdelight	Core infrastructure has been modified
aws	2i2c-aws-us	ncar-cisl	Core infrastructure has been modified
aws	2i2c-aws-us	go-bgc	Core infrastructure has been modified
aws	2i2c-aws-us	itcoocean	Core infrastructure has been modified
gcp	awi-ciroh	prod	Core infrastructure has been modified
gcp	meom-ige	prod	Core infrastructure has been modified
gcp	linked-earth	prod	Core infrastructure has been modified
gcp	2i2c-uk	lis	Core infrastructure has been modified
gcp	cloudbank	bcc	Core infrastructure has been modified
gcp	cloudbank	ccsf	Core infrastructure has been modified
gcp	cloudbank	csm	Core infrastructure has been modified
gcp	cloudbank	dvc	Core infrastructure has been modified
gcp	cloudbank	elcamino	Core infrastructure has been modified
gcp	cloudbank	evc	Core infrastructure has been modified
gcp	cloudbank	glendale	Core infrastructure has been modified
gcp	cloudbank	howard	Core infrastructure has been modified
gcp	cloudbank	miracosta	Core infrastructure has been modified
gcp	cloudbank	skyline	Core infrastructure has been modified
gcp	cloudbank	demo	Core infrastructure has been modified
gcp	cloudbank	fresno	Core infrastructure has been modified
gcp	cloudbank	humboldt	Core infrastructure has been modified
gcp	cloudbank	laney	Core infrastructure has been modified
gcp	cloudbank	sbcc	Core infrastructure has been modified
gcp	cloudbank	lacc	Core infrastructure has been modified
gcp	cloudbank	mills	Core infrastructure has been modified
gcp	cloudbank	mission	Core infrastructure has been modified
gcp	cloudbank	norco	Core infrastructure has been modified
gcp	cloudbank	palomar	Core infrastructure has been modified
gcp	cloudbank	pasadena	Core infrastructure has been modified
gcp	cloudbank	sjcc	Core infrastructure has been modified
gcp	cloudbank	sacramento	Core infrastructure has been modified
gcp	cloudbank	srjc	Core infrastructure has been modified
gcp	cloudbank	saddleback	Core infrastructure has been modified
gcp	cloudbank	santiago	Core infrastructure has been modified
gcp	cloudbank	sjsu	Core infrastructure has been modified
gcp	cloudbank	tuskegee	Core infrastructure has been modified
gcp	cloudbank	wlac	Core infrastructure has been modified
gcp	cloudbank	csulb	Core infrastructure has been modified
gcp	2i2c	hackanexoplanet	Core infrastructure has been modified
gcp	2i2c	imagebuilding-demo	Core infrastructure has been modified
gcp	2i2c	demo	Core infrastructure has been modified
gcp	2i2c	ohw	Core infrastructure has been modified
gcp	2i2c	pfw	Core infrastructure has been modified
gcp	2i2c	aup	Core infrastructure has been modified
gcp	2i2c	temple	Core infrastructure has been modified
gcp	2i2c	ucmerced	Core infrastructure has been modified
gcp	2i2c	cosmicds	Core infrastructure has been modified
gcp	2i2c	climatematch	Core infrastructure has been modified
gcp	2i2c	neurohackademy	Core infrastructure has been modified
gcp	2i2c	mtu	Core infrastructure has been modified

[github-actions]

🎉🎉🎉🎉

Monitor the deployment of the hubs here 👉 https://github.com/2i2c-org/infrastructure/actions/runs/5929538750