Remove some dead code.

gson/src/main/java/com/google/gson/internal/Pair.java

@@ -1,61 +0,0 @@
-/*
- * Copyright (C) 2009 Google Inc.
- *
- * 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.google.gson.internal;
-
-/**
- * A simple object that holds onto a pair of object references, first and second.
- *
- * @author Inderjeet Singh
- * @author Joel Leitch
- *
- * @param <FIRST>
- * @param <SECOND>
- */
-public final class Pair<FIRST, SECOND> {
-  public final FIRST first;
-  public final SECOND second;
-
-  public Pair(FIRST first, SECOND second) {
-    this.first = first;
-    this.second = second;
-  }
-
-  @Override
-  public int hashCode() {
-    return 17 * ((first != null) ? first.hashCode() : 0)
-        + 17 * ((second != null) ? second.hashCode() : 0);
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (!(o instanceof Pair<?, ?>)) {
-      return false;
-    }
-
-    Pair<?, ?> that = (Pair<?, ?>) o;
-    return equal(this.first, that.first) && equal(this.second, that.second);
-  }
-
-  private static boolean equal(Object a, Object b) {
-    return a == b || (a != null && a.equals(b));
-  }
-
-  @Override
-  public String toString() {
-    return String.format("{%s,%s}", first, second);
-  }
-}

gson/src/main/java/com/google/gson/internal/Primitives.java

@@ -17,7 +17,6 @@
 package com.google.gson.internal;
 
 
-import com.google.gson.internal.$Gson$Preconditions;
 import java.lang.reflect.Type;
 import java.util.Collections;
 import java.util.HashMap;