tests/unittests, cn_cbor: remove invisible unicode char from Makefile
tests/unittests, cn_cbor: remove invisible unicode char from Makefile

kYc0o/RIOT,biboc/RIOT,authmillenon/RIOT,A-Paul/RIOT,RIOT-OS/RIOT,gebart/RIOT,smlng/RIOT,BytesGalore/RIOT,gebart/RIOT,kaspar030/RIOT,avmelnikoff/RIOT,avmelnikoff/RIOT,josephnoir/RIOT,aeneby/RIOT,kYc0o/RIOT,neiljay/RIOT,ant9000/RIOT,OTAkeys/RIOT,mtausig/RIOT,biboc/RIOT,x3ro/RIOT,OlegHahm/RIOT,toonst/RIOT,basilfx/RIOT,rfuentess/RIOT,OTAkeys/RIOT,mtausig/RIOT,mtausig/RIOT,miri64/RIOT,kaspar030/RIOT,jasonatran/RIOT,yogo1212/RIOT,neiljay/RIOT,authmillenon/RIOT,kaspar030/RIOT,gebart/RIOT,jasonatran/RIOT,kbumsik/RIOT,neiljay/RIOT,kbumsik/RIOT,cladmi/RIOT,kYc0o/RIOT,ant9000/RIOT,smlng/RIOT,lazytech-org/RIOT,cladmi/RIOT,kaspar030/RIOT,A-Paul/RIOT,jasonatran/RIOT,mfrey/RIOT,josephnoir/RIOT,RIOT-OS/RIOT,mfrey/RIOT,rfuentess/RIOT,biboc/RIOT,jasonatran/RIOT,A-Paul/RIOT,OTAkeys/RIOT,ant9000/RIOT,lazytech-org/RIOT,OlegHahm/RIOT,kYc0o/RIOT,miri64/RIOT,yogo1212/RIOT,basilfx/RIOT,yogo1212/RIOT,OTAkeys/RIOT,miri64/RIOT,miri64/RIOT,A-Paul/RIOT,mfrey/RIOT,x3ro/RIOT,yogo1212/RIOT,biboc/RIOT,mtausig/RIOT,BytesGalore/RIOT,lazytech-org/RIOT,mtausig/RIOT,cladmi/RIOT,kbumsik/RIOT,toonst/RIOT,rfuentess/RIOT,cladmi/RIOT,RIOT-OS/RIOT,A-Paul/RIOT,ant9000/RIOT,lazytech-org/RIOT,basilfx/RIOT,kbumsik/RIOT,avmelnikoff/RIOT,avmelnikoff/RIOT,authmillenon/RIOT,authmillenon/RIOT,lazytech-org/RIOT,smlng/RIOT,BytesGalore/RIOT,x3ro/RIOT,OlegHahm/RIOT,rfuentess/RIOT,josephnoir/RIOT,smlng/RIOT,kbumsik/RIOT,neiljay/RIOT,OlegHahm/RIOT,biboc/RIOT,miri64/RIOT,yogo1212/RIOT,josephnoir/RIOT,mfrey/RIOT,aeneby/RIOT,authmillenon/RIOT,jasonatran/RIOT,toonst/RIOT,rfuentess/RIOT,kYc0o/RIOT,OTAkeys/RIOT,x3ro/RIOT,authmillenon/RIOT,smlng/RIOT,x3ro/RIOT,aeneby/RIOT,gebart/RIOT,RIOT-OS/RIOT,basilfx/RIOT,avmelnikoff/RIOT,toonst/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,basilfx/RIOT,josephnoir/RIOT,aeneby/RIOT,BytesGalore/RIOT,mfrey/RIOT,OlegHahm/RIOT,BytesGalore/RIOT,neiljay/RIOT,yogo1212/RIOT,ant9000/RIOT,gebart/RIOT,aeneby/RIOT,cladmi/RIOT,toonst/RIOT