libnetwork references misc: Remove libnetwork references

The legacy network stack has been moved to a separate package.
Remove references to it in odd places.

Doxyfile

@@ -899,7 +899,7 @@ RECURSIVE              = YES
 # Note that relative paths are relative to the directory from which doxygen is
 # run.
 
-EXCLUDE                = cpukit/libnetworking cpukit/libfs/src/nfsclient
+EXCLUDE                =
 
 # The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
 # directories that are symbolic links (a Unix file system feature) are excluded

cpukit/libfs/README.md

@@ -12,7 +12,7 @@ Currently the supported file systems in this library are:
    files, directories, device nodes and mount points. It can also be
    configured to be the miniIMFS.
 
-- TFTP and FTP filesystem are part of the libnetworking library.
+- TFTP and FTP filesystem require networking support.
 
 - DEVFS or Device File system
 

cpukit/libmisc/shell/README.md

@@ -18,7 +18,7 @@ NOTES:
 2.  You only need a termios dev to start a new session, add your new commands
     and enjoy it.
 
-3.  Telnetd daemon uses this (browse libnetworking/rtems_telnetd)
+3.  Telnetd daemon uses this.
     Enjoy it.
 
 FUTURE: