Revert "Fix performance issue for case when there are a lot of warnings in file"

This reverts commit 3d8e5c4f8e.

 Temporarily reverting this commit due to new flaky tests

compiler/backend/src/org/jetbrains/kotlin/codegen/state/GenerationState.kt

@@ -336,9 +336,6 @@ private class LazyJvmDiagnostics(compute: () -> Diagnostics) : Diagnostics {
 
     override fun noSuppression() = delegate.noSuppression()
 
-    override fun hasDiagnostic(diagnostic: Diagnostic) =
-        delegate.hasDiagnostic(diagnostic)
-
     override fun iterator() = delegate.iterator()
 }