UPSTREAM: <drop>: Remove duplicate VolumeGroupSnapshottableTestSuite from CSISuites

The VolumeGroupSnapshot e2e test was running twice in CI, causing the second
execution to fail with timeouts and crashes. The test suite initializer
InitVolumeGroupSnapshottableTestSuite was incorrectly added to both BaseSuites
and CSISuites. Since CSISuites is created by appending to BaseSuites, this
caused the same test to be registered and executed twice. The second run would
fail because it attempted to create volume group snapshot resources that were
still cleaning up from the first successful run.

This removes the duplicate entry from CSISuites, ensuring the test only runs once.

Author: stbenjam

test/e2e/storage/testsuites/base.go

@@ -80,7 +80,6 @@ var CSISuites = append(BaseSuites,
 		return InitCustomEphemeralTestSuite(CSIEphemeralTestPatterns())
 	},
 	InitSnapshottableTestSuite,
-	InitVolumeGroupSnapshottableTestSuite,
 	InitSnapshottableStressTestSuite,
 	InitVolumePerformanceTestSuite,
 	InitPvcDeletionPerformanceTestSuite,