[KPM] :kotlin-gradle-plugin-idea: Use gradle-plugin-common-configuration

^KT-51262

libraries/tools/kotlin-gradle-plugin-idea/build.gradle.kts

@@ -1,12 +1,5 @@
 plugins {
-    kotlin("jvm")
+    id("gradle-plugin-common-configuration")
-}
-
-kotlin {
-    sourceSets.configureEach {
-        languageSettings.languageVersion = "1.4"
-        languageSettings.apiVersion = "1.4"
-    }
 }
 
 dependencies {