In `remove`, delete the link in place rather than blanking first

When using the pattern of blanking the lines first and then deleting
the blank lines, the program ends up deleting potentially intentional
blank lines. In order to avoid this, use a simple delete rather than the
blanking + blank line deleting pattern.

hosts

@@ -690,7 +690,7 @@ remove() {
     $_me help remove
     exit 1
   else
-    sed -i "s/^[^#].*[^A-Za-z0-9\.]${hostname}$//g;/^$/d" /etc/hosts
+    sed -i "/^[^#].*[^A-Za-z0-9\.]${hostname}$/d" /etc/hosts
   fi
 }