[bindings/go] Add RemoveFromParentAsInstruction

[aykevl]

Summary

This allows removing instructions without erasing them. They can then be added somewhere else in the IR using Builder.Insert().

[whitequark]

LGTM

[aykevl]

I forgot to include the Differential Revision line but this has been committed here:
https://github.com/llvm/llvm-project/commit/00570c2f18872ce0a1f68cc73e7e259ad67aa60d

llvm/bindings/go/llvm/ir.go

   return
 }
 func (bb BasicBlock) EraseFromParent()          { C.LLVMDeleteBasicBlock(bb.C) }
 func (bb BasicBlock) MoveBefore(pos BasicBlock) { C.LLVMMoveBasicBlockBefore(bb.C, pos.C) }
 func (bb BasicBlock) MoveAfter(pos BasicBlock)  { C.LLVMMoveBasicBlockAfter(bb.C, pos.C) }
 
 // Operations on instructions
 func (v Value) EraseFromParentAsInstruction()      { C.LLVMInstructionEraseFromParent(v.C) }
+func (v Value) RemoveFromParentAsInstruction()     { C.LLVMInstructionRemoveFromParent(v.C) }
 func (v Value) InstructionParent() (bb BasicBlock) { bb.C = C.LLVMGetInstructionParent(v.C); return }
 func (v Value) InstructionDebugLoc() (md Metadata) { md.C = C.LLVMInstructionGetDebugLoc(v.C); return }
 func (v Value) InstructionSetDebugLoc(md Metadata) { C.LLVMInstructionSetDebugLoc(v.C, md.C) }
 func (bb BasicBlock) FirstInstruction() (v Value)  { v.C = C.LLVMGetFirstInstruction(bb.C); return }
 func (bb BasicBlock) LastInstruction() (v Value)   { v.C = C.LLVMGetLastInstruction(bb.C); return }
 func NextInstruction(v Value) (rv Value)           { rv.C = C.LLVMGetNextInstruction(v.C); return }
 func PrevInstruction(v Value) (rv Value)           { rv.C = C.LLVMGetPreviousInstruction(v.C); return }