Remove kotlin.Experimental from opt-ins as it would be removed in 1.8.20

Author: sandwwraith

build.gradle

@@ -12,13 +12,13 @@ buildscript {
     if (project.hasProperty("library.version")) {
         ext.overriden_version = property('library.version')
     }
-    ext.experimentalsEnabled = ["-progressive", "-opt-in=kotlin.Experimental",
+    ext.experimentalsEnabled = ["-progressive",
                                 "-opt-in=kotlin.ExperimentalMultiplatform",
                                 "-opt-in=kotlinx.serialization.InternalSerializationApi",
                                 "-P", "plugin:org.jetbrains.kotlinx.serialization:disableIntrinsic=false"
     ]
 
-    ext.experimentalsInTestEnabled = ["-progressive", "-opt-in=kotlin.Experimental",
+    ext.experimentalsInTestEnabled = ["-progressive",
                                       "-opt-in=kotlin.ExperimentalMultiplatform",
                                       "-opt-in=kotlinx.serialization.ExperimentalSerializationApi",
                                       "-opt-in=kotlinx.serialization.InternalSerializationApi",

gradle/configure-source-sets.gradle

@@ -29,7 +29,6 @@ kotlin {
         languageSettings {
             progressiveMode = true
 
-            optIn("kotlin.Experimental")
             optIn("kotlin.ExperimentalMultiplatform")
             optIn("kotlin.ExperimentalStdlibApi")
             optIn("kotlinx.serialization.InternalSerializationApi")