Drop settings.gradle.kts from kotlin-native/shared

Review: https://jetbrains.team/p/kt/reviews/6753

I don't know why this settings.gradle.kts is needed. But I think that
it was needed before "kotlin-native merge into kotlin" times. (Pavel
Punegov says the same) I try to remove and if CI doesn't fail then I
will push it.

I need to drop settings.gradle.kts because I'm going to replace
kotlin-reflect dependency from source to binary in the next commits. And
before doing this refactoring I want to normalize all the dependencies
on kotlin-reflect.

kotlin-native/shared/build.gradle.kts

@@ -51,8 +51,8 @@ tasks.jar {
 dependencies {
     kotlinCompilerClasspath("org.jetbrains.kotlin:kotlin-compiler-embeddable:$kotlinVersion")
 
-    implementation("org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion")
-    implementation("org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion")
+    implementation(kotlinStdlib())
+    implementation(project(":kotlin-reflect"))
     api("org.jetbrains.kotlin:kotlin-native-utils:$kotlinVersion")
     api("org.jetbrains.kotlin:kotlin-util-klib:$kotlinVersion")
 }

kotlin-native/shared/settings.gradle.kts

@@ -1,23 +0,0 @@
-pluginManagement {
-    val rootProperties = java.util.Properties().apply {
-        rootDir.resolve("../gradle.properties").reader().use(::load)
-    }
-
-    val kotlinVersion: String by rootProperties
-
-    repositories {
-        maven(project.bootstrapKotlinRepo)
-        maven("https://cache-redirector.jetbrains.com/maven-central")
-        mavenCentral()
-    }
-
-    resolutionStrategy {
-        eachPlugin {
-            if (requested.id.id == "kotlin") {
-                useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
-            }
-        }
-    }
-}
-
-rootProject.name = "kotlin-native-shared"