[CI] Temporarily disable RCCL UT Standalone.RegressionTiming in CI (#1350)

Signed-off-by: nileshnegi <Nilesh.Negi@amd.com>

[ROCm/rccl commit: 8b3ed8f104]

projects/rccl/.jenkins/common.groovy

@@ -17,6 +17,9 @@ def runCompileCommand(platform, project, jobName)
 
 def runTestCommand (platform, project, gfilter, envars)
 {
+    // Temporarily disable Standalone.RegressionTiming for RCCL CI
+    gfilter = "*:-Standalone.Regression*"
+
     String sudo = auxiliary.sudo(platform.jenkinsLabel)
 
     def command = """#!/usr/bin/env bash