Remove service-compiler related code.

tools/servicec/lib/src/resources/java/dartino/MessageBuilder.java

-// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE.md file.
-
-package dartino;
-
-public class MessageBuilder {
-  public MessageBuilder(int space) {
-    segments = 1;
-    first = new BuilderSegment(this, 0, space);
-    last = first;
-  }
-
-  public BuilderSegment first() { return first; }
-
-  public int segments() { return segments; }
-
-  public Builder initRoot(Builder builder, int size) {
-    // Return value and arguments use the same space. Therefore,
-    // the size of any struct needs to be at least 8 bytes in order
-    // to have room for the return address.
-    if (size == 0) size = 8;
-    int offset = first.allocate(56 + size);
-    builder.segment = first;
-    builder.base = offset + 56;
-    return builder;
-  }
-
-  public int computeUsed() {
-    int result = 0;
-    BuilderSegment current = first;
-    while (current != null) {
-      result += current.used();
-      current = current.next();
-    }
-    return result;
-  }
-
-  public BuilderSegment findSegmentForBytes(int bytes) {
-    if (last.hasSpaceForBytes(bytes)) return last;
-    int capacity = (bytes > 8192) ? bytes : 8192;
-    BuilderSegment segment = new BuilderSegment(this, segments++, capacity);
-    last.setNext(segment);
-    last = segment;
-    return segment;
-  }
-
-  private BuilderSegment first;
-  private BuilderSegment last;
-  private int segments;
-};