Remove deprecated member functions (NFC)

[chill]

Summary

Remove the member functions getByValAlign and getOrigAlign, there were no users left.

[gchatelet]

Thank you for the clean up. Really appreciate it.
Before submitting the patch did you check that there are no users in experimental targets? (ARC, VE)

[chill]

In D99098#2686627, @gchatelet wrote:

Thank you for the clean up. Really appreciate it.
Before submitting the patch did you check that there are no users in experimental targets? (ARC, VE)

Yeah, I grepped through the entire llvm tree.

llvm/include/llvm/CodeGen/TargetCallingConv.h

public:
     void setSplitEnd()  { IsSplitEnd = 1; }
 
     bool isCopyElisionCandidate()  const { return IsCopyElisionCandidate; }
     void setCopyElisionCandidate() { IsCopyElisionCandidate = 1; }
 
     bool isPointer()  const { return IsPointer; }
     void setPointer() { IsPointer = 1; }
 
-    LLVM_ATTRIBUTE_DEPRECATED(unsigned getByValAlign() const,
-                              "Use getNonZeroByValAlign() instead") {
-      MaybeAlign A = decodeMaybeAlign(ByValOrByRefAlign);
-      return A ? A->value() : 0;
-    }
     Align getNonZeroByValAlign() const {
       MaybeAlign A = decodeMaybeAlign(ByValOrByRefAlign);
       assert(A && "ByValAlign must be defined");
       return *A;
     }
     void setByValAlign(Align A) {
       assert(isByVal() && !isByRef());
       setAlignImpl(A);
     }
 
     void setByRefAlign(Align A) {
       assert(!isByVal() && isByRef());
       setAlignImpl(A);
     }
 
-    LLVM_ATTRIBUTE_DEPRECATED(unsigned getOrigAlign() const,
-                              "Use getNonZeroOrigAlign() instead") {
-      MaybeAlign A = decodeMaybeAlign(OrigAlign);
-      return A ? A->value() : 0;
-    }
     Align getNonZeroOrigAlign() const {
       return decodeMaybeAlign(OrigAlign).valueOrOne();
     }
     void setOrigAlign(Align A) {
       OrigAlign = encode(A);
       assert(getNonZeroOrigAlign() == A && "bitfield overflow");
     }