Remove non-portable constructors

Since we're breaking ABI here, these constructors need to go. Manually
setting the size to `sizeof(int)` is non-portable as the
BPatch::createEnum may be used to modify a binary that doesn't have the
same `int` representation as the host on which Dyninst was compiled.

symtabAPI/h/Type.h

@@ -386,8 +386,6 @@ class SYMTAB_EXPORT typeEnum : public derivedType {
  public:
    struct scoped_t final {};
    typeEnum() = default;
-   typeEnum(typeId_t ID, std::string name = "");
-   typeEnum(std::string name);
    typeEnum(boost::shared_ptr<Type> underlying_type, std::string name);
    typeEnum(boost::shared_ptr<Type> underlying_type, std::string name, typeId_t ID);
    typeEnum(boost::shared_ptr<Type> underlying_type, std::string name, typeId_t ID, scoped_t) :

symtabAPI/src/Type.C

@@ -296,12 +296,6 @@ bool Type::isCompatible(Type * /*oType*/)
 /*
  * ENUM
  */
-typeEnum::typeEnum(int ID, std::string name)
-    : derivedType(name, ID, sizeof(int), dataEnum){}
-
-typeEnum::typeEnum(std::string name)
-   : derivedType(name, ::getUniqueTypeId(), sizeof(int), dataEnum) {}
-
 typeEnum::typeEnum(boost::shared_ptr<Type> underlying_type, std::string name, typeId_t ID) :
 		derivedType(name, ID, underlying_type->getSize(), dataEnum) {
 	baseType_ = underlying_type;