[sledge] Style: fix make fmt

Summary: Remove mistakenly-added line.

Reviewed By: da319

Differential Revision: D23446971

fbshipit-source-id: 956d1ab14

sledge/Makefile

@@ -69,7 +69,6 @@ clean:
 fmt:
 	-dune build @_build/debug/fmt --auto-promote 2>/dev/null
 	tmp=$(mktemp -t 'dune-format'); dune format-dune-file dune-project > tmp; mv -f tmp dune-project
-	tmp=$(mktemp -t 'dune-format'); dune format-dune-file ics/dune-project > tmp; mv -f tmp ics/dune-project
 	tmp=$(mktemp -t 'dune-format'); dune format-dune-file dune-workspace > tmp; mv -f tmp dune-workspace
 	clang-format -i model/llair_intrinsics.h model/cxxabi.cpp
 	${MAKE} -C test fmt