message: Removed shape proto from map and sequence types in anticpation of move of shape to TensorTypeProto
diff: @@ -382,7 +382,6 @@ message TypeProto {
  // The type and optional shape of each element of the sequence.
  // This field MUST be present for this version of the IR.
  optional TypeProto elem_type = 1;
  - optional TensorShapeProto elem_shape = 2;
  };
  // map<K,V>
  @@ -392,7 +391,6 @@ message TypeProto {
  optional TensorProto.DataType key_type = 1;
  // This field MUST be present for this version of the IR.
  optional TypeProto value_type = 2;
  - optional TensorShapeProto value_shape = 3;
  };
  // oneof { ... }
  