[AMDGPU] Remove dead and broken ComplexPatterns

[jrtc27]

Summary

SelectADDRParam was discovered as being dead 5 years ago and removed in
7b4ef068c6f5 but the unused ComplexPattern definition was left behind.
SelectADDRDWord has never existed as far as I can tell, even back when
AMDGPU was R600-only and called that.

[foad]

Looks obvious.

llvm/lib/Target/AMDGPU/R600Instructions.td

 def CT: Operand<i32> {
   let PrintMethod = "printCT";
 }
 
 def FRAMEri : Operand<iPTR> {
   let MIOperandInfo = (ops R600_Reg32:$ptr, i32imm:$index);
 }
 
-def ADDRParam : ComplexPattern<i32, 2, "SelectADDRParam", [], []>;
-def ADDRDWord : ComplexPattern<i32, 1, "SelectADDRDWord", [], []>;
 def ADDRVTX_READ : ComplexPattern<i32, 2, "SelectADDRVTX_READ", [], []>;
 def ADDRGA_CONST_OFFSET : ComplexPattern<i32, 1, "SelectGlobalValueConstantOffset", [], []>;
 def ADDRGA_VAR_OFFSET : ComplexPattern<i32, 2, "SelectGlobalValueVariableOffset", [], []>;
 def ADDRIndirect : ComplexPattern<iPTR, 2, "SelectADDRIndirect", [], []>;
 
 
 def R600_Pred : PredicateOperand<i32, (ops R600_Predicate),
                                      (ops PRED_SEL_OFF)>;