Remove service-compiler related code.

tools/servicec/lib/src/resources/java/dartino/BuilderSegment.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;
-
-class BuilderSegment extends Segment {
-  public BuilderSegment(MessageBuilder builder, int id, int size) {
-    super(new byte[size]);
-    this.builder = builder;
-    this.id = id;
-    used = 0;
-  }
-
-  public boolean hasSpaceForBytes(int bytes) {
-    return used + bytes < buffer().capacity();
-  }
-
-  public int allocate(int bytes) {
-    if (!hasSpaceForBytes(bytes)) return -1;
-    int result = used;
-    used += bytes;
-    return result;
-  }
-
-  public int id() { return id; }
-  public int used() { return used; }
-  public MessageBuilder builder() { return builder; }
-
-  public boolean hasNext() { return next != null; }
-  public BuilderSegment next() { return next; }
-  public void setNext(BuilderSegment segment) { next = segment; }
-
-  private MessageBuilder builder;
-  private int id;
-  private BuilderSegment next;
-  private int used;
-}