[WASM] Support for mjs universal launcher

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt

@@ -249,13 +249,6 @@ class K2JSCompilerArguments : CommonCompilerArguments() {
     @Argument(value = "-Xwasm-debug-info", description = "Add debug info to WebAssembly compiled module")
     var wasmDebug: Boolean by FreezableVar(true)
 
-    @Argument(
-            value = "-Xwasm-launcher",
-            valueDescription = "esm|nodejs|d8",
-            description = "Picks flavor for the wasm launcher. Default is ESM."
-    )
-    var wasmLauncher: String? by NullableStringFreezableVar("esm")
-
     @Argument(value = "-Xwasm-kclass-fqn", description = "Enable support for FQ names in KClass")
     var wasmKClassFqn: Boolean by FreezableVar(false)
 

compiler/cli/cli-js/src/org/jetbrains/kotlin/cli/js/K2JsIrCompiler.kt

@@ -11,7 +11,6 @@ import com.intellij.openapi.util.text.StringUtil
 import org.jetbrains.kotlin.backend.common.CompilationException
 import org.jetbrains.kotlin.backend.common.phaser.PhaseConfig
 import org.jetbrains.kotlin.backend.common.serialization.metadata.KlibMetadataVersion
-import org.jetbrains.kotlin.backend.wasm.WasmLoaderKind
 import org.jetbrains.kotlin.backend.wasm.compileWasm
 import org.jetbrains.kotlin.backend.wasm.compileToLoweredIr
 import org.jetbrains.kotlin.backend.wasm.wasmPhases
@@ -362,18 +361,9 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
                     generateWat = true,
                 )
 
-                val launcherKind = when (arguments.wasmLauncher) {
-                    "esm" -> WasmLoaderKind.BROWSER
-                    "nodejs" -> WasmLoaderKind.NODE
-                    "d8" -> WasmLoaderKind.D8
-                    "d8NodeCompatible" -> WasmLoaderKind.D8NodeCompatible
-                    else -> throw IllegalArgumentException("Unrecognized flavor for the wasm launcher")
-                }
-
                 writeCompilationResult(
                     result = res,
                     dir = outputFile.parentFile,
-                    loaderKind = launcherKind,
                     fileNameBase = outputFile.nameWithoutExtension
                 )