remove superfluous module usage

checkdesign.for

@@ -40,9 +40,6 @@ C -------------------------------------------------------------
       USE dfwin
 #endif
 #else
-#ifdef __GFORTRAN__
-      USE gfortran
-#endif
       USE ISO_C_BINDING
       USE ISO_C_UTILITIES
       USE DLFCN

recpr.for

@@ -23,9 +23,6 @@ C You should have received a copy of the GNU General Public License
 C along with DMM.  If not, see <http://www.gnu.org/licenses/>.
 C ------------------------------------------------------------------------
 	SUBROUTINE RECPR(N,NS,nobs,S,SW,PM,PTR)
-#ifdef __GFORTRAN__
-      USE gfortran
-#endif
 ! INPUT
 	INTEGER N,NS,nobs
 	INTEGER S(nobs),SW(2*nobs)