remove repetition of libquadmath in TH CMakeLists

Author: soumith

CMakeLists.txt

@@ -473,7 +473,6 @@ IF (BLAS_FOUND AND BLAS_INSTALL_LIBRARIES)
     Install_Required_Library(${BLAS_openblas_LIBRARY})
     Install_Required_Library("${libpath}/libquadmath")
     Install_Required_Library("${libpath}/libgfortran")
-    Install_Required_Library("${libpath}/libquadmath")
     Install_Required_Library("${libpath}/libgcc")
   ENDIF()
 ENDIF()