Remove LLVMGetTargetMachineData in go-binding.

Summary:
LLVMGetTargetMachineData has been removed, and LLVMGetDataLayout is
suggested to use. The LLVMGetDataLayout is exposed in go bindings.
So it's safe to remove the function.

Reviewers: bkramer

Subscribers: llvm-commits, axw

Differential Revision: http://reviews.llvm.org/D17193

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260670 91177308-0d34-0410-b5e6-96231b3b80d8

bindings/go/llvm/target.go

@@ -267,11 +267,6 @@ func (tm TargetMachine) Triple() string {
 	return C.GoString(cstr)
 }
 
-// TargetData returns the TargetData for the machine.
-func (tm TargetMachine) TargetData() TargetData {
-	return TargetData{C.LLVMGetTargetMachineData(tm.C)}
-}
-
 func (tm TargetMachine) EmitToMemoryBuffer(m Module, ft CodeGenFileType) (MemoryBuffer, error) {
 	var errstr *C.char
 	var mb MemoryBuffer