Refactor: Inline kotlinReflectModule

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

In the next commits, source dependency on kotlin-reflect will be
replaced with binary dependency. Thus, it won't be technically be a a
"module" anynmore. So I either have to rename "kotlinReflectModule" or
get rid of it. I decided to get rid of it (inline it) because there is
only one usage.

kotlin-native/backend.native/build.gradle

@@ -107,7 +107,7 @@ dependencies {
     trove4j_jar "org.jetbrains.intellij.deps:trove4j:1.0.20181211@jar"
     kotlin_compiler_jar project(kotlinCompilerModule)
     kotlin_stdlib_jar kotlinStdLibModule
-    kotlin_reflect_jar kotlinReflectModule
+    kotlin_reflect_jar project(":kotlin-reflect")
     kotlin_script_runtime_jar project(":kotlin-script-runtime")
 
     compilerApi project(":kotlin-native:utilities:basic-utils")