Remove unnecessary copy ctors.

They didn't provide any value over the default ones but blocked move semantics.

llvm-svn: 202664

llvm/include/llvm/ADT/DenseSet.h

@@ -30,7 +30,6 @@ public:
   typedef ValueT key_type;
   typedef ValueT value_type;
 
-  DenseSet(const DenseSet &Other) : TheMap(Other.TheMap) {}
   explicit DenseSet(unsigned NumInitBuckets = 0) : TheMap(NumInitBuckets) {}
 
   bool empty() const { return TheMap.empty(); }
@@ -57,11 +56,6 @@ public:
     TheMap.swap(RHS.TheMap);
   }
 
-  DenseSet &operator=(const DenseSet &RHS) {
-    TheMap = RHS.TheMap;
-    return *this;
-  }
-
   // Iterators.
 
   class Iterator {

llvm/include/llvm/ADT/SmallString.h

@@ -34,9 +34,6 @@ public:
   template<typename ItTy>
   SmallString(ItTy S, ItTy E) : SmallVector<char, InternalLen>(S, E) {}
 
-  /// Copy ctor.
-  SmallString(const SmallString &RHS) : SmallVector<char, InternalLen>(RHS) {}
-
   // Note that in order to add new overloads for append & assign, we have to
   // duplicate the inherited versions so as not to inadvertently hide them.