remove unneeded patch that was introduced earlier to fix a problem in some older Grails release

frameworks/Groovy/grails/hello/src/groovy/org/codehaus/groovy/grails/plugins/codecs/JSONEncoder.java

@@ -1,85 +0,0 @@
-/*
- * Copyright 2013 the original author or authors.
- *
- * 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.codehaus.groovy.grails.plugins.codecs;
-
-import org.apache.commons.lang.StringUtils;
-import org.codehaus.groovy.grails.support.encoding.CodecIdentifier;
-import org.codehaus.groovy.grails.support.encoding.DefaultCodecIdentifier;
-
-/**
- * Escapes characters in JSON output
- *
- * @author Lari Hotari
- * @since 2.3.4
- */
-public class JSONEncoder extends AbstractCharReplacementEncoder {
-    public static final CodecIdentifier JSON_CODEC_IDENTIFIER = new DefaultCodecIdentifier(
-            "JSON", "Json") {
-        public boolean isEquivalent(CodecIdentifier other) {
-            return super.isEquivalent(other) || JavaScriptEncoder.JAVASCRIPT_CODEC_IDENTIFIER.getCodecName().equals(other.getCodecName());
-        };
-    };
-
-    public JSONEncoder() {
-        super(JSON_CODEC_IDENTIFIER);
-    }
-
-    /* (non-Javadoc)
-     * @see org.codehaus.groovy.grails.plugins.codecs.AbstractCharReplacementEncoder#escapeCharacter(char, char)
-     */
-    @Override
-    protected String escapeCharacter(char ch, char previousChar) {
-        switch (ch) {
-            case '"':
-                return "\\\"";
-            case '\\':
-                return "\\\\";
-            case '\t':
-                return "\\t";
-            case '\n':
-                return "\\n";
-            case '\r':
-                return "\\r";
-            case '\f':
-                return "\\f";
-            case '\b':
-                return "\\b";
-            case '\u000B': // vertical tab: http://bclary.com/2004/11/07/#a-7.8.4
-                return "\\v";
-            case '\u2028':
-                return "\\u2028"; // Line separator
-            case '\u2029':
-                return "\\u2029"; // Paragraph separator
-            case '/':
-                // preserve special handling that exists in JSONObject.quote to improve security if JSON is embedded in HTML document
-                // prevents outputting "</" gets outputted with unicode escaping for the slash
-                if (previousChar == '<') {
-                    return "\\u002f"; 
-                }
-                break;
-        }
-        if(ch < ' ') {
-            // escape all other control characters
-            return "\\u" + StringUtils.leftPad(Integer.toHexString(ch), 4, '0');
-        }
-        return null;
-    }
-
-    @Override
-    public boolean isApplyToSafelyEncoded() {
-        return true;
-    }
-}