Revert r345542: AMDGPU: Enable code object v3 by default

It breaks mesa.

llvm-svn: 345662
diff --git a/llvm/test/CodeGen/AMDGPU/hsa-metadata-hidden-args.ll b/llvm/test/CodeGen/AMDGPU/hsa-metadata-hidden-args.ll
index 6dbc1e2..ed2e796 100644
--- a/llvm/test/CodeGen/AMDGPU/hsa-metadata-hidden-args.ll
+++ b/llvm/test/CodeGen/AMDGPU/hsa-metadata-hidden-args.ll
@@ -1,6 +1,6 @@
-; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx700 -mattr=-code-object-v3 -filetype=obj -o - < %s | llvm-readobj -elf-output-style=GNU -notes | FileCheck --check-prefix=CHECK --check-prefix=GFX700 --check-prefix=NOTES %s
-; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx803 -mattr=-code-object-v3 -filetype=obj -o - < %s | llvm-readobj -elf-output-style=GNU -notes | FileCheck --check-prefix=CHECK --check-prefix=GFX803 --check-prefix=NOTES %s
-; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -mattr=-code-object-v3 -filetype=obj -o - < %s | llvm-readobj -elf-output-style=GNU -notes | FileCheck --check-prefix=CHECK --check-prefix=GFX900 --check-prefix=NOTES %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx700 -filetype=obj -o - < %s | llvm-readobj -elf-output-style=GNU -notes | FileCheck --check-prefix=CHECK --check-prefix=GFX700 --check-prefix=NOTES %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx803 -filetype=obj -o - < %s | llvm-readobj -elf-output-style=GNU -notes | FileCheck --check-prefix=CHECK --check-prefix=GFX803 --check-prefix=NOTES %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -filetype=obj -o - < %s | llvm-readobj -elf-output-style=GNU -notes | FileCheck --check-prefix=CHECK --check-prefix=GFX900 --check-prefix=NOTES %s
 
 ; CHECK: ---
 ; CHECK:  Version: [ 1, 0 ]