Remove service-compiler related code.

tests/service_tests/conformance/conformance_service.idl

-// 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.
-
-service ConformanceService {
-  int32 getAge(Person* person);
-  int32 getBoxedAge(PersonBox* box);
-  AgeStats* getAgeStats(Person* person);
-  AgeStats* createAgeStats(int32 averageAge, int32 sum);
-  Person* createPerson(int32 children);
-  Node* createNode(int32 depth);
-  int32 count(Person* person);
-
-  int32 depth(Node* node);
-  void foo();
-  int32 bar(Empty* empty);
-
-  int32 ping();
-
-  TableFlip* flipTable(TableFlip* flip);
-  InternalFields* internalize(InternalFields* internalFields);
-}
-
-struct Empty { }
-
-struct AgeStats {
-  int32 averageAge;
-  int32 sum;
-}
-
-struct Person {
-  String name;
-  int32 age;
-  List<Person> children;
-}
-
-struct Large {
-  int32 y;
-  Small s;
-}
-
-struct Small {
-  int32 x;
-}
-
-struct PersonBox {
-  Person* person;
-}
-
-struct Node {
-  union {
-    int32 num;
-    bool cond;
-    Cons cons;
-    void nil;
-  }
-}
-
-struct Cons {
-  Node* fst;
-  Node* snd;
-}
-
-struct TableFlip {
-  String flip;
-}
-
-struct InternalFields {
-  int32 offset;
-  String segment;
-}