Remove kotlinc K/N scripts because they clash with real (K/JVM) kotlinc

These scripts were deprecated in 1.5.0.

kotlin-native/utilities/cli-runner/src/main/kotlin/org/jetbrains/kotlin/cli/utilities/main.kt

@@ -17,25 +17,7 @@ private fun mainImpl(args: Array<String>, runFromDaemon: Boolean, konancMain: (A
     when (utilityName) {
         "konanc" ->
             konancMain(utilityArgs)
-        "kotlinc" -> {
-            println("""
-                NOTE: you are running "kotlinc" CLI tool from Kotlin/Native distribution,
-                it runs Kotlin/Native compiler that produces native binaries from Kotlin code.
-                If your intention was to compile Kotlin code to JVM bytecode instead, then you
-                need to use "kotlinc" from the main Kotlin distribution (e.g. it can be
-                downloaded as kotlin-compiler-X.Y.ZZ.zip archive from
-                https://github.com/JetBrains/kotlin/releases/latest, or installed using various
-                package managers).
 
-                WARNING: if your intention was to run Kotlin/Native compiler, then please use
-                "kotlinc-native" CLI tool instead of "kotlinc". "kotlinc" tool will be removed
-                from Kotlin/Native distribution, so it will stop clashing with "kotlinc" from
-                the main Kotlin distribution.
-
-            """.trimIndent())
-
-            konancMain(utilityArgs)
-        }
         "cinterop" -> {
             val konancArgs = invokeInterop("native", utilityArgs, runFromDaemon)
             konancArgs?.let { konancMain(it) }