Remove TailCall.TailPosition.NotTail metadata. #29643

Job	Run time
Cancel Previous Runs	2s
Engine (GraalVM CE) (macos, amd64)	31m 58s
Engine (GraalVM CE) (linux, amd64)	34m 57s
Engine (GraalVM CE) (windows, amd64)	30m 48s
JVM Tests (GraalVM CE) (linux, amd64)	27m 43s
JVM Tests (GraalVM CE) (macos, amd64)	51m 51s
JVM Tests (GraalVM CE) (windows, amd64)	1h 8m 33s
Standard Library Tests (GraalVM CE) (linux, amd64)	27m 16s
Standard Library Tests (GraalVM CE) (macos, amd64)	36m 37s
Standard Library Tests (GraalVM CE) (windows, amd64)	35m 28s
Verify License Packages (linux, amd64)	2m 50s
	5h 48m 3s

Provide feedback