workload: remove SCRUB test

The existing SCRUB test was considered for conversion to use INSPECT, but this
test is outdated and lacks metric exports. Our goal is to build a roachtest
that can measure throughput and the impact on foreground traffic. Both of which
will be addressed in #154457.

We also plan to add INSPECT coverage to multiple existing roachtests (#154049),
rendering this standalone test unnecessary. Additionally, SCRUB itself is
scheduled for removal (#148274), so maintaining or converting this test is not
worthwhile.

Release note: none
Epic: CRDB-30356
Closes #149810

Author: spilchen

pkg/cmd/roachtest/tests/BUILD.bazel

@@ -181,7 +181,6 @@ go_library(
         "s3_minio.go",
         "schemachange.go",
         "schemachange_random_load.go",
-        "scrub.go",
         "secondary_indexes.go",
         "sequelize.go",
         "slow_drain.go",

pkg/cmd/roachtest/tests/registry.go

@@ -154,8 +154,6 @@ func RegisterTests(r registry.Registry) {
 	registerSchemaChangeRandomLoad(r)
 	registerLargeSchemaBackupRestores(r)
 	registerLargeSchemaBenchmarks(r)
-	registerScrubAllChecksTPCC(r)
-	registerScrubIndexOnlyTPCC(r)
 	registerSecondaryIndexesMultiVersionCluster(r)
 	registerSequelize(r)
 	registerSlowDrain(r)