DAOS-14673 test: Remove rebuild/io_conf_run.py because it's covered b… #7466

Job	Run time
Build DAOS (alma.8)	39m 18s
Build DAOS (alma.9)	39m 7s
Build DAOS (rocky.8)	38m 48s
Build DAOS (ubuntu)	38m 37s
Build DAOS (ARM64) (ubuntu, clang)	36m 10s
Build DAOS (ARM64) (alma.8, clang)	35m 33s
Build DAOS (ARM64) (leap.15, clang)	35m 20s
Create Docker images (ubuntu)	12m 1s
Create Docker images (rocky)	10m 45s
Create Docker images (fedora)	11m 44s
Create Docker images (leap.15)	12m 59s
Run DAOS/NLT tests (ubuntu)	28m 1s
Build DAOS in image (ubuntu, clang)	25m 15s
Build DAOS in image (ubuntu, gcc)	28m 30s
Build DAOS in image (rocky, clang)	23m 17s
Build DAOS in image (rocky, gcc)	27m 17s
Build DAOS in image (fedora, clang)	24m 47s
Build DAOS in image (fedora, gcc)	26m 0s
Build DAOS in image (leap.15, clang)	25m 9s
Build DAOS in image (leap.15, gcc)	25m 46s
	9h 4m 24s

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