Remove %clean section

None of currently supported distributions need that.
Last one was EL5 which is EOL for a while.

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

perl-FileHandle-Fmode.spec

@@ -46,9 +46,6 @@ find %{buildroot} -depth -type d -exec rmdir {} 2>/dev/null \;
 %check
 make test
 
-%clean
-rm -rf %{buildroot}
-
 %files
 %defattr(-,root,root,-)
 %doc CHANGES README