Revert "Initial checkin of AOSP Messaging app."

This reverts commit 461a34b466.

Change-Id: Iac4ca77eeaa94989e91dead49a7959c905bd3078

src/com/android/messaging/util/TextUtil.java

@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * 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 com.android.messaging.util;
-
-import android.support.annotation.Nullable;
-
-public class TextUtil {
-    /**
-     * Returns true if the string is empty, null or only whitespace.
-     */
-    public static boolean isAllWhitespace(@Nullable String string) {
-      if (string == null || string.isEmpty()) {
-        return true;
-      }
-
-      for (int i = 0; i < string.length(); ++i) {
-        if (!Character.isWhitespace(string.charAt(i))) {
-          return false;
-        }
-      }
-
-      return true;
-    }
-
-    /**
-     * Taken from PhoneNumberUtils, where it is only available in API 21+ Replaces all unicode
-     * (e.g. Arabic, Persian) digits with their decimal digit equivalents.
-     *
-     * @param number the number to perform the replacement on.
-     * @return the replaced number.
-     */
-    public static String replaceUnicodeDigits(String number) {
-        StringBuilder normalizedDigits = new StringBuilder(number.length());
-        for (char c : number.toCharArray()) {
-            int digit = Character.digit(c, 10);
-            if (digit != -1) {
-                normalizedDigits.append(digit);
-            } else {
-                normalizedDigits.append(c);
-            }
-        }
-        return normalizedDigits.toString();
-    }
-
-    /**
-     * Appends text to the stringBuilder.
-     * If stringBuilder already has content, separator is prepended to create a separator between
-     * entries.
-     * @param stringBuilder The stringBuilder to add to
-     * @param text The text to append
-     * @param separator The separator to add if there is already text, typically "," or "\n"
-     */
-    public static void appendWithSeparator(final StringBuilder stringBuilder, final String text,
-            final String separator) {
-        if (stringBuilder.length() > 0) {
-            stringBuilder.append(separator);
-        }
-        stringBuilder.append(text);
-    }
-}