CodeGen: Remove redundant REQUIRES registered-target from tests

These are already in target specific test directories.

Author: arsenm

llvm/test/CodeGen/AArch64/statepoint-twoaddr.mir

@@ -1,7 +1,6 @@
 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=aarch64-unknown-linux -run-pass=twoaddressinstruction -verify-machineinstrs %s -o - | FileCheck %s
 # RUN: llc -mtriple=aarch64-unknown-linux --passes=two-address-instruction -verify-each %s -o - | FileCheck %s
-# REQUIRES: aarch64-registered-target
 
 # Verify that the register class is correctly constrained after the twoaddress replacement
 ---

llvm/test/CodeGen/AMDGPU/expand-variadic-call.ll

@@ -1,6 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: -p --function-signature
 ; RUN: opt -S --passes=expand-variadics --expand-variadics-override=lowering < %s | FileCheck %s
-; REQUIRES: amdgpu-registered-target
 target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:256:256:32-p8:128:128-p9:192:256:256:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7:8:9"
 target triple = "amdgcn-amd-amdhsa"
 

llvm/test/CodeGen/X86/tls-align.ll

@@ -1,4 +1,3 @@
-; REQUIRES: x86-registered-target
 ; RUN: opt -passes=instcombine -S < %s | FileCheck %s
 
 %class.Arr = type <{ [160 x %class.Derived], i32, [4 x i8] }>