Remove some dead script code and fix a script comment.

Change-Id: I91ca466d1b6f8a39da50ce61acebc268d0daab3a
diff --git a/libc/tools/genserv.py b/libc/tools/genserv.py
index e37d28f..84a139d 100755
--- a/libc/tools/genserv.py
+++ b/libc/tools/genserv.py
@@ -5,7 +5,7 @@
 
 def usage():
     print """\
-  usage:  genserv < /etc/services > netbsd/net/services.h
+  usage:  genserv < /etc/services > libc/netbsd/net/services.h
 
   this program is used to generate the hard-coded internet service list for the
   Bionic C library.
@@ -72,5 +72,3 @@
     line += str(s)+"\\\n"
 line += '\\0";\n'
 print line
-
-