dlls: Remove 16-bit files on make clean.
diff --git a/dlls/Makefile.in b/dlls/Makefile.in
index 0e7c6ad..3dafd6c 100644
--- a/dlls/Makefile.in
+++ b/dlls/Makefile.in
@@ -1766,7 +1766,7 @@
 	-rmdir $(DESTDIR)$(dlldir)
 
 clean::
-	$(RM) $(IMPORT_SYMLINKS)
+	$(RM) $(IMPORT_SYMLINKS) $(WIN16_FILES)
 
 check test:: $(BUILDSUBDIRS:%=%/__test__)
 
diff --git a/dlls/make_dlls b/dlls/make_dlls
index 0f2bc5b..0a9012b 100755
--- a/dlls/make_dlls
+++ b/dlls/make_dlls
@@ -351,7 +351,7 @@
 	-rmdir \$(DESTDIR)\$(dlldir)
 
 clean::
-	\$(RM) \$(IMPORT_SYMLINKS)
+	\$(RM) \$(IMPORT_SYMLINKS) \$(WIN16_FILES)
 
 check test:: \$(BUILDSUBDIRS:%=%/__test__)