[DWARF] Fix consistency and AIX compatibility of checks in DWARF test

This patch removes the white space and trailing bracket to make the checks consistent and verbose direct/indirect string agnostic for AIX compatibility.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D115287

llvm/test/DebugInfo/Generic/debug-info-qualifiers.ll

@@ -21,7 +21,7 @@
 
 ; CHECK: DW_TAG_subprogram
 ; CHECK-NOT: DW_TAG_subprogram
-; CHECK:   DW_AT_name {{.*}} "g")
+; CHECK:   DW_AT_name {{.*}}"g"
 ;
 ; CHECK: DW_TAG_subprogram
 ; CHECK-NOT: DW_TAG_subprogram