[DebugInfo][test] Move distringtype.ll to X86/ subdir to fix failures when X86 target is not built

Author: MaskRay

llvm/test/DebugInfo/distringtype.ll renamed to llvm/test/DebugInfo/X86/distringtype.ll

@@ -22,8 +22,6 @@
 ;;   end subroutine sub
 ;; end program assumedLength
 
-; ModuleID = 'test.ll'
-source_filename = "test.ll"
 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"