Simplify cache-redirector script apply method

Now it could be only be applied inside settings file pluginManagement
block. This will update both settings repositories and all projects in
the repo with cache redirection settings.

settings.gradle

@@ -1,4 +1,6 @@
 pluginManagement {
+    apply from: 'repo/scripts/cache-redirector.settings.gradle.kts'
+
     repositories {
         def pluginRepo = System.getProperty("bootstrap.kotlin.repo")
         if (pluginRepo != null) {
@@ -6,15 +8,9 @@ pluginManagement {
                 url pluginRepo
             }
         }
-
-        if (cacheRedirectorEnabled == 'true') {
-            logger.info("Using cache redirector for settings.gradle pluginManagement")
-            maven { url "https://cache-redirector.jetbrains.com/plugins.gradle.org/m2" }
-            maven { url "https://cache-redirector.jetbrains.com/maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies" }
-        } else {
-            gradlePluginPortal()
-            maven { url "https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies" }
-        }
+        maven { url "https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies" }
+        mavenCentral()
+        gradlePluginPortal()
     }
 
     plugins {
@@ -23,14 +19,6 @@ pluginManagement {
 }
 
 buildscript {
-    repositories {
-        if (cacheRedirectorEnabled == 'true') {
-            maven { url "https://cache-redirector.jetbrains.com/maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies" }
-        } else {
-            maven { url "https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies" }
-        }
-        mavenCentral()
-    }
     def buildGradlePluginVersion = ext["kotlin.build.gradlePlugin.version"]
     dependencies {
         classpath("org.jetbrains.kotlin:kotlin-build-gradle-plugin:${buildGradlePluginVersion}")