Add kotlin-build-tools-enum-compat workaround

It acts as a workaround for the case when build tools or dependencies
are compiled with latest 'kotlin-stdlib' version, but at a runtime older
 'kotlin-stdlib' is provided, which does not know about new
 `EnumEntries`.

 ^KT-57317 Fixed

plugins/pill/pill-importer/build.gradle.kts

@@ -51,10 +51,3 @@ val unpill by tasks.creating {
     dependsOn(jar)
     doLast { runPillTask("unpill") }
 }
-
-// 1.9 level breaks Kotlin Gradle plugins via changes in enums (KT-48872)
-tasks.withType<KotlinCompilationTask<*>>().configureEach {
-    compilerOptions.apiVersion.value(KotlinVersion.KOTLIN_1_8).finalizeValueOnRead()
-    compilerOptions.languageVersion.value(KotlinVersion.KOTLIN_1_8).finalizeValueOnRead()
-}
-