Remove prefix test_fcl_ from the unit-tests.

test/CMakeLists.txt

test/benchmark.cpp

test/benchmark/test_fcl_gjk.output

test/box_box_distance.cpp

test/broadphase.cpp

test/bvh_models.cpp

test/capsule_box_1.cpp

test/capsule_box_2.cpp

test/capsule_capsule.cpp

test/collision-bench.py

test/collision.cpp

test/collision.py

test/distance.cpp

test/distance_lower_bound.cpp

test/distance_lower_bound.py

test/eigen.cpp

test/frontlist.cpp

test/geometric_shapes.cpp

test/geometric_shapes.py

test/gjk-geometric-tools-benchmark