Minor: remove File?.readTextOrEmpty()

compiler/util/src/org/jetbrains/kotlin/utils/fileUtils.kt

@@ -18,10 +18,6 @@ package org.jetbrains.kotlin.utils.fileUtils
 
 import java.io.File
 
-// TODO: move to stdlib as:
-// public fun File?.readTextOrEmpty(encoding: String = Charset.defaultCharset().name()): String = this?.readText(encoding) ?: ""
-fun File?.readTextOrEmpty(): String = this?.readText() ?: ""
-
 fun File.withReplacedExtensionOrNull(oldExt: String, newExt: String): File? {
     if (name.endsWith(oldExt)) {
         val path = path

js/js.translator/src/org/jetbrains/kotlin/js/facade/TranslationResult.kt

@@ -31,7 +31,6 @@ import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics
 import org.jetbrains.kotlin.serialization.js.KotlinJavascriptSerializationUtil
 import org.jetbrains.kotlin.utils.KotlinJavascriptMetadataUtils
-import org.jetbrains.kotlin.utils.fileUtils.readTextOrEmpty
 import java.io.File
 import java.util.ArrayList
 
@@ -56,8 +55,8 @@ abstract class TranslationResult protected constructor(val diagnostics: Diagnost
             }
 
             val code = getCode(output, sourceMapBuilder)
-            val prefix = outputPrefixFile?.readTextOrEmpty() ?: ""
-            val postfix = outputPostfixFile?.readTextOrEmpty() ?: ""
+            val prefix = outputPrefixFile?.readText() ?: ""
+            val postfix = outputPostfixFile?.readText() ?: ""
             val sourceFiles = files.map {
                 val virtualFile = it.originalFile.virtualFile