Remove nampespace importation to avoid name collision when xdebug is used to compute code coverage.
Remove nampespace importation to avoid name collision when xdebug is used to compute code coverage.

mageekguy/atoum,vonglasow/atoum,agallou/atoum,mageekguy/atoum,gpaton/atoum,CedCannes/atoum,tejerka/atoum,gpaton/atoum,agallou/atoum,Tiross/atoum,CedCannes/atoum,mikaelrandy/atoum,vonglasow/atoum,GuillaumeDievart/atoum,GuillaumeDievart/atoum,jubianchi/atoum,jubianchi/atoum,Tiross/atoum,mikaelrandy/atoum,tejerka/atoum