Remove some trivial copy ctors so the classes become trivially copyable and get the optimized SmallVector implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159916 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/SMLoc.h

@@ -24,7 +24,6 @@ class SMLoc {
   const char *Ptr;
 public:
   SMLoc() : Ptr(0) {}
-  SMLoc(const SMLoc &RHS) : Ptr(RHS.Ptr) {}
 
   bool isValid() const { return Ptr != 0; }