Remove hack ensuring that darwin didn't produce dwarf > 3 for modules
without a limiting factor.

Update all testcases accordingly.

llvm-svn: 190002
diff --git a/llvm/test/DebugInfo/X86/stringpool.ll b/llvm/test/DebugInfo/X86/stringpool.ll
index d9604de..02a0fea 100644
--- a/llvm/test/DebugInfo/X86/stringpool.ll
+++ b/llvm/test/DebugInfo/X86/stringpool.ll
@@ -26,8 +26,8 @@
 ; Verify that we refer to 'yyyy' without a relocation.
 ; DARWIN: Lset5 = Linfo_string3-Linfo_string          ## DW_AT_name
 ; DARWIN-NEXT:        .long   Lset5
-; DARWIN-NEXT:        .long   39                      ## DW_AT_type
-; DARWIN-NEXT:        .byte   1                       ## DW_AT_external
+; DARWIN-NEXT:        .long   38                      ## DW_AT_type
+; DARWIN-NEXT:                                        ## DW_AT_external
 ; DARWIN-NEXT:        .byte   1                       ## DW_AT_decl_file
 ; DARWIN-NEXT:        .byte   1                       ## DW_AT_decl_line
 ; DARWIN-NEXT:        .byte   9                       ## DW_AT_location