Remove "make build" from tools/impact
Remove "make build" from tools/impact

There is no "build" target anymore.

This was forgotten in 0519d7e3ce2f64dbe40b85240fbf96e3c3c80f01.

mcanthony/pegjs,Mingun/pegjs,mcanthony/pegjs,pegjs/pegjs,GerHobbelt/pegjs,Sciumo/pegjs,luisvt/pegjs,luisvt/pegjs,GerHobbelt/pegjs,wwall/pegjs-fn,pegjs/pegjs,crguezl/pegjs,jlturner/pegjs,Mingun/pegjs,Sciumo/pegjs,crguezl/pegjs,wwall/pegjs-fn,jlturner/pegjs