more libgcc cruft

[Mike Stump]

I think these are old as well...

Ok?

Doing diffs in Makefile.in.~1~:
--- Makefile.in.~1~     2007-01-04 12:08:32.000000000 -0800
+++ Makefile.in 2007-01-04 13:56:56.000000000 -0800
@@ -3524,7 +3524,6 @@ fsf-funding.pod: funding.texi
 mostlyclean: lang.mostlyclean
        -rm -f $(STAGECOPYSTUFF) $(STAGEMOVESTUFF)
        -rm -f *$(coverageexts)
-       -rm -rf libgcc
 # Delete build programs
        -rm -f build/*
        -rm -f mddeps.mk
@@ -3568,7 +3567,6 @@ clean: mostlyclean lang.clean
        -rm -f config.h tconfig.h bconfig.h tm_p.h tm.h
        -rm -f options.c options.h optionlist
        -rm -f cs-*
-       -rm -rf libgcc
        -rm -f doc/*.dvi
        -rm -f doc/*.pdf
 # Delete the include directory.
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