modutils/*: move applet bits into corresponding *.c files

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
diff --git a/modutils/rmmod.c b/modutils/rmmod.c
index aa1bb01..51390eb 100644
--- a/modutils/rmmod.c
+++ b/modutils/rmmod.c
@@ -8,6 +8,8 @@
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
+//applet:IF_RMMOD(APPLET(rmmod, _BB_DIR_SBIN, _BB_SUID_DROP))
+
 #include "libbb.h"
 #include "modutils.h"