Remove test IR.

Author: perlfu

llvm/test/CodeGen/AMDGPU/GlobalISel/twoaddr-extract-dyn-v7f64.mir

@@ -1,15 +1,6 @@
 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 4
 # RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx900 -early-live-intervals -run-pass=liveintervals -run-pass=twoaddressinstruction -verify-machineinstrs -o - %s | FileCheck %s
 
---- |
-  define double @dyn_extract_v7f64_v_v(<7 x double> %vec, i32 %sel) #0 {
-  entry:
-    %ext = extractelement <7 x double> %vec, i32 %sel
-    ret double %ext
-  }
-
-  attributes #0 = { "amdgpu-no-completion-action" "amdgpu-no-default-queue" "amdgpu-no-dispatch-id" "amdgpu-no-dispatch-ptr" "amdgpu-no-heap-ptr" "amdgpu-no-hostcall-ptr" "amdgpu-no-implicitarg-ptr" "amdgpu-no-lds-kernel-id" "amdgpu-no-multigrid-sync-arg" "amdgpu-no-queue-ptr" "amdgpu-no-workgroup-id-x" "amdgpu-no-workgroup-id-y" "amdgpu-no-workgroup-id-z" "amdgpu-no-workitem-id-x" "amdgpu-no-workitem-id-y" "amdgpu-no-workitem-id-z" "amdgpu-waves-per-eu"="4,10" "target-cpu"="gfx900" "uniform-work-group-size"="false" }
-...
 ---
 name:            dyn_extract_v7f64_v_v
 legalized:       true