Don't delete keys from USB drive

src/freedombone

               cp -r $USB_MOUNT/.gnupg /home/$MY_USERNAME
               chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.gnupg
               GPG_KEYS_IMPORTED="yes"
-              if [ -f /home/$MY_USERNAME/.gnupg/secring.gpg ]; then
-                  shred -zu $USB_MOUNT/.gnupg/secring.gpg
-                  shred -zu $USB_MOUNT/.gnupg/random_seed
-                  shred -zu $USB_MOUNT/.gnupg/trustdb.gpg
-                  rm -rf $USB_MOUNT/.gnupg
-              else
+              if [ ! -f /home/$MY_USERNAME/.gnupg/secring.gpg ]; then
                   echo 'GPG files did not copy'
-                  exit 7
+                  exit 73529
               fi
           fi
 
           cp -r $USB_MOUNT/.ssh /home/$MY_USERNAME
           chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.ssh
           # for security delete the ssh keys from the usb drive
-          if [ -f /home/$MY_USERNAME/.ssh/id_rsa ]; then
-              shred -zu $USB_MOUNT/.ssh/id_rsa
-              shred -zu $USB_MOUNT/.ssh/id_rsa.pub
-              shred -zu $USB_MOUNT/.ssh/known_hosts
-              rm -rf $USB_MOUNT/.ssh
-          else
+          if [ ! -f /home/$MY_USERNAME/.ssh/id_rsa ]; then
               echo 'ssh files did not copy'
               exit 8
           fi