Partial revert of 80e35ef4f01b87c9d60123398754e2ea2a71b1c4

As the original commit significantly affects Kotlin performance benchmarks

GitOrigin-RevId: 38a6b927492c80054b8866c0b290e9b8d06ea8db

plugins/performanceTesting/core/intellij.performanceTesting.iml

@@ -72,6 +72,5 @@
     <orderEntry type="module" module-name="intellij.tools.ide.starter.bus" />
     <orderEntry type="module" module-name="intellij.platform.eel.provider" />
     <orderEntry type="module" module-name="intellij.platform.recentFiles.frontend" />
-    <orderEntry type="library" name="jbr-api" level="project" />
   </component>
 </module>

plugins/performanceTesting/core/src/com/jetbrains/performancePlugin/commands/GCCommand.kt

@@ -1,11 +1,9 @@
 // Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.jetbrains.performancePlugin.commands
 
-import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.ui.playback.PlaybackContext
 import com.intellij.openapi.ui.playback.commands.AbstractCommand
 import com.intellij.openapi.util.ActionCallback
-import com.jetbrains.JBR
 import com.jetbrains.performancePlugin.utils.ActionCallbackProfilerStopper
 import org.jetbrains.concurrency.Promise
 import org.jetbrains.concurrency.toPromise
@@ -23,13 +21,7 @@ internal class GCCommand(text: String, line: Int) : AbstractCommand(text, line)
     val ref = WeakReference(IntArray(32 * 1024))
     try {
       Waiter.checkCondition {
-        if (JBR.isSystemUtilsSupported()) {
-          JBR.getSystemUtils().fullGC()
-        }
-        else {
-          LOG.warn("The JBR.getSystemUtils API isn't supported. Using regular GC, but this might increase the probability of false positives")
-          System.gc()
-        }
+        System.gc()
         (ref.get() == null).also { done ->
           if (done) {
             actionCallback.setDone()
@@ -42,6 +34,4 @@ internal class GCCommand(text: String, line: Int) : AbstractCommand(text, line)
     }
     return actionCallback.toPromise()
   }
-}
-
-private val LOG = logger<GCCommand>()
+}