Remove --allow-multiple-definion linker flag for 64-bit Windows

Bug: http://b/109759970

r335286 fixed this for 64-bit Windows.  This remains broken for 32-bit
Windows.

Test: m native-host-cross
Change-Id: I4d11b83d51db055406c6723aad89efd1b86b9b7b
diff --git a/cc/config/x86_windows_host.go b/cc/config/x86_windows_host.go
index 65b9e6c..9573174 100644
--- a/cc/config/x86_windows_host.go
+++ b/cc/config/x86_windows_host.go
@@ -106,9 +106,6 @@
 		"-L${WindowsGccRoot}/lib/gcc/${WindowsGccTriple}/4.8.3",
 		"-B${WindowsGccRoot}/${WindowsGccTriple}/lib64",
 		"-pthread",
-		// Bug: http://b/109759970 - WAR until issue with ld.bfd's
-		// inability to handle Clang-generated section names is fixed.
-		"-Wl,--allow-multiple-definition",
 	}...)
 	windowsX8664ClangLldflags = ClangFilterUnknownLldflags(windowsX8664ClangLdflags)