Revert "Enable lld for windows"

This reverts commit 3c21c0b1d9bab0d51100ca03aa157a1d8545c2ea.

Reason for revert: appears to break AdbWinUsb.dll usage by fastboot (and adb?)

Bug: http://b/129420419
Bug: http://b/110800681
Change-Id: I36d6d87f2e830e08e257ab42d470e49cdbb95819
diff --git a/cc/linker.go b/cc/linker.go
index 179a998..fd958ba 100644
--- a/cc/linker.go
+++ b/cc/linker.go
@@ -290,6 +290,10 @@
 	if ctx.Darwin() {
 		return false
 	}
+	// http://b/110800681 - lld cannot link Android's Windows modules yet.
+	if ctx.Windows() {
+		return false
+	}
 	if linker.Properties.Use_clang_lld != nil {
 		return Bool(linker.Properties.Use_clang_lld)
 	}
@@ -343,7 +347,7 @@
 			// darwin defaults to treating undefined symbols as errors
 			flags.LdFlags = append(flags.LdFlags, "-Wl,-undefined,dynamic_lookup")
 		}
-	} else if !ctx.Darwin() && !ctx.Windows() {
+	} else if !ctx.Darwin() {
 		flags.LdFlags = append(flags.LdFlags, "-Wl,--no-undefined")
 	}
 
@@ -380,7 +384,7 @@
 
 	flags.LdFlags = append(flags.LdFlags, proptools.NinjaAndShellEscapeList(linker.Properties.Ldflags)...)
 
-	if ctx.Host() && !ctx.Windows() {
+	if ctx.Host() {
 		rpath_prefix := `\$$ORIGIN/`
 		if ctx.Darwin() {
 			rpath_prefix = "@loader_path/"