bugfix: don't check /usr/include/uhd when compiling with -w USRP

Compilation will fail if UHD is not installed, there is no need
to check. Plus the test is wrong when you install UHD somewhere
else.

cmake_targets/build_oai

@@ -856,11 +856,9 @@ function main() {
 	      ln -sf $dbin/liboai_exmimodevif.so.$REL $dbin/liboai_device.so
 	      echo_info "liboai_device.so is linked to EXMIMO device library"       
 	  elif [ "$HW" == "OAI_USRP" ] ; then
-	      if [ -d "/usr/include/uhd" ] ; then
-		  compilations \
-		      $build_dir oai_usrpdevif \
-		      liboai_usrpdevif.so $dbin/liboai_usrpdevif.so.$REL
-	      fi
+              compilations \
+                  $build_dir oai_usrpdevif \
+                  liboai_usrpdevif.so $dbin/liboai_usrpdevif.so.$REL
 
 	      ln -sf liboai_usrpdevif.so liboai_device.so
 	      ln -sf $dbin/liboai_usrpdevif.so.$REL $dbin/liboai_device.so