Revert "[CodeGen] Fix invalid DWARF info on Win64"

Appears to break on build bots. Reverting pending investigation.

llvm-svn: 289014
diff --git a/llvm/lib/MC/MCCodeView.cpp b/llvm/lib/MC/MCCodeView.cpp
index ae0e50a..ac1acc0 100644
--- a/llvm/lib/MC/MCCodeView.cpp
+++ b/llvm/lib/MC/MCCodeView.cpp
@@ -200,7 +200,7 @@
   OS.EmitIntValue(unsigned(ModuleSubstreamKind::Lines), 4);
   OS.emitAbsoluteSymbolDiff(LineEnd, LineBegin, 4);
   OS.EmitLabel(LineBegin);
-  OS.EmitCOFFSecRel32(FuncBegin, /*Offset=*/0);
+  OS.EmitCOFFSecRel32(FuncBegin);
   OS.EmitCOFFSectionIndex(FuncBegin);
 
   // Actual line info.