Makefile: fix make distclean w.r.t. test-suite
Makefile: fix make distclean w.r.t. test-suite

 No need for a distclean rule in test-suite, since the root-level distclean
 already launches clean, which launches clean in test-suite, and this one
 does the job

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@14915 85f007b7-540e-0410-9357-904b9bb8a0f7

ppedrot/coq,gares/coq,pirapira/coq2rust,william-lawvere/coq,shindere/coq,silene/coq,shindere/coq,mattam82/coq,amintimany/coq,Matafou/coq,Lionel-Rieg/coq,SkySkimmer/coq,herbelin/github-coq,Zimmi48/coq,SkySkimmer/coq,TOSPIO/coq,gares/coq,jhjourdan/coq,mlasson/coq,maximedenes/coq,ejgallego/coq,shindere/coq,Zimmi48/coq,coq/coq,SkySkimmer/coq,Zimmi48/coq,ale-f/coq,aspiwack/coq,gares/coq,asr/coq,amintimany/coq,JasonGross/coq,mlasson/coq,jhjourdan/coq,ejgallego/coq,gmalecha/coq,Ptival/coq,aspiwack/coq,letouzey/coq-wip,silene/coq,pirapira/coq2rust,Ptival/coq,Lionel-Rieg/coq,herbelin/github-coq,william-lawvere/coq,JasonGross/coq,Ptival/coq,coq/coq,asr/coq,pirapira/coq2rust,Zimmi48/coq,barras/coq,herbelin/github-coq,8l/coq,letouzey/coq-wip,gmalecha/coq,coq/coq,ale-f/coq,maximedenes/coq,ppedrot/coq,ppedrot/coq,JasonGross/coq,gares/coq,letouzey/coq-wip,pirbo/coq,gares/coq,8l/coq,letouzey/coq-wip,8l/coq,mlasson/coq,aspiwack/coq,william-lawvere/coq,maximedenes/coq,TheTypoMaster/coq,Matafou/coq,mattam82/coq,letouzey/coq-wip,TOSPIO/coq,TOSPIO/coq,mattam82/coq,gmalecha/coq,Matafou/coq,amintimany/coq,barras/coq,SkySkimmer/coq,JasonGross/coq,asr/coq,jpdeplaix/coq,ppedrot/coq,ejgallego/coq,jpdeplaix/coq,TheTypoMaster/coq,pirbo/coq,jhjourdan/coq,maximedenes/coq,TheTypoMaster/coq,silene/coq,ppedrot/coq,pirbo/coq,jpdeplaix/coq,barras/coq,coq/coq,ale-f/coq,Lionel-Rieg/coq,maximedenes/coq,ejgallego/coq