Build: remove obsolete compiler arguments

These compiler arguments enable features which are enabled by default in
the current Kotlin anyway.

The only exception is in :compiler:cli which uses an old language
version.

libraries/kotlin.test/js-ir/build.gradle.kts

@@ -49,10 +49,8 @@ kotlin {
 tasks.withType<KotlinCompile<*>>().configureEach {
     kotlinOptions.freeCompilerArgs += listOf(
         "-Xallow-kotlin-package",
-        "-Xallow-result-return-type",
         "-Xopt-in=kotlin.ExperimentalMultiplatform",
-        "-Xopt-in=kotlin.contracts.ExperimentalContracts",
-        "-Xinline-classes"
+        "-Xopt-in=kotlin.contracts.ExperimentalContracts"
     )
 }
 

libraries/kotlin.test/jvm/build.gradle

@@ -43,7 +43,6 @@ configureJavadocJar()
 compileKotlin {
     kotlinOptions.freeCompilerArgs = [
         "-Xallow-kotlin-package",
-        "-Xnormalize-constructor-calls=enable",
         "-Xopt-in=kotlin.contracts.ExperimentalContracts",
         "-Xsuppress-deprecated-jvm-target-warning",
         "-Xopt-in=kotlin.RequiresOptIn",