Delete unused class

compiler/util/src/org/jetbrains/kotlin/utils/KotlinVfsUtil.java

@@ -1,59 +0,0 @@
-/*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.utils;
-
-import com.intellij.openapi.util.SystemInfo;
-import com.intellij.openapi.util.text.StringUtil;
-import com.intellij.util.io.URLUtil;
-import org.jetbrains.annotations.NotNull;
-
-import java.net.MalformedURLException;
-import java.net.URL;
-
-/*
- * This code is essentially copied from IntelliJ IDEA's VfsUtil, and slightly restructured
- */
-public class KotlinVfsUtil {
-    private static final String FILE = "file";
-    private static final String JAR = "jar";
-    private static final String PROTOCOL_DELIMITER = ":";
-
-    @NotNull
-    public static String convertFromUrl(@NotNull URL url) throws MalformedURLException {
-        String protocol = url.getProtocol();
-        String path = url.getPath();
-        if (JAR.equals(protocol)) {
-            if (StringUtil.startsWithConcatenationOf(path, FILE, PROTOCOL_DELIMITER)) {
-                URL subURL = new URL(path);
-                path = subURL.getPath();
-            }
-            else {
-                throw new MalformedURLException("Can't parse url: " + url.toExternalForm());
-            }
-        }
-        if (SystemInfo.isWindows || SystemInfo.isOS2) {
-            while (path.length() > 0 && path.charAt(0) == '/') {
-                path = path.substring(1, path.length());
-            }
-        }
-
-        path = URLUtil.unescapePercentSequences(path);
-        return protocol + "://" + path;
-    }
-
-    private KotlinVfsUtil() {}
-}