remove executable permissions on non-executables and non-scripts

src/ASPHERE/compute_temp_asphere.cpp

src/ASPHERE/compute_temp_asphere.h

src/ASPHERE/fix_npt_asphere.cpp

src/ASPHERE/fix_npt_asphere.h

src/ASPHERE/fix_nve_asphere.cpp

src/ASPHERE/fix_nve_asphere.h

src/ASPHERE/fix_nve_asphere_noforce.h

src/ASPHERE/fix_nvt_asphere.cpp

src/ASPHERE/fix_nvt_asphere.h

src/ASPHERE/pair_gayberne.cpp

src/ASPHERE/pair_gayberne.h

src/ASPHERE/pair_resquared.cpp

src/ASPHERE/pair_resquared.h

src/BODY/compute_temp_body.cpp

src/BODY/compute_temp_body.h

src/BODY/fix_npt_body.cpp

src/BODY/fix_npt_body.h

src/BODY/fix_nvt_body.cpp

src/BODY/fix_nvt_body.h

src/COLLOID/pair_brownian.cpp