Remove service-compiler related code.

tools/servicec/lib/src/pretty_printer.dart

-// 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 file.
-
-library old_servicec.pretty_printer;
-
-import 'parser.dart';
-import 'struct_layout.dart';
-
-import 'dart:core' hide Type;
-
-class PrettyPrinter extends Visitor {
-  final StringBuffer buffer = new StringBuffer();
-
-  visit(Node node) => node.accept(this);
-
-  visitUnit(Unit node) {
-    node.services.forEach(visit);
-    node.structs.forEach(visit);
-  }
-
-  visitService(Service node) {
-    buffer.writeln("service ${node.name} {");
-    node.methods.forEach(visit);
-    buffer.writeln("}");
-  }
-
-  visitMethod(Method node) {
-    buffer.write("  ");
-    writeType(node.returnType);
-    buffer.write(" ${node.name}(");
-    bool first = true;
-    node.arguments.forEach((Formal formal) {
-      if (!first) buffer.write(", ");
-      first = false;
-      visit(formal);
-    });
-    buffer.writeln(");");
-  }
-
-  visitStruct(Struct node) {
-    StructLayout layout = node.layout;
-    buffer.writeln("struct ${node.name} {  // size = ${layout.size} bytes");
-    for (Formal slot in node.slots) {
-      buffer.write("  ");
-      visit(slot);
-      buffer.writeln(";  // offset = ${layout[slot].offset}");
-    }
-    node.unions.forEach(visit);
-    buffer.writeln("}");
-  }
-
-  visitUnion(Union node) {
-    StructLayout layout = node.struct.layout;
-    buffer.writeln("  union {");
-    for (Formal slot in node.slots) {
-      buffer.write("    ");
-      visit(slot);
-      buffer.writeln(";  // offset = ${layout[slot].offset}");
-    }
-    buffer.writeln("  }");
-  }
-
-  visitFormal(Formal node) {
-    writeType(node.type);
-    buffer.write(" ${node.name}");
-  }
-
-  void writeType(Type node) {
-    if (node.isList) buffer.write("List<");
-    buffer.write(node.identifier);
-    if (node.isList) buffer.write(">");
-  }
-}