ftape: remove some outdated information from Kconfig files

This patch removes some outdated information about the ftape driver like
pointers to no longer existing webpages from Kconfig files.

Signed-off-by: Adrian Bunk <[e-mail]>

drivers/char/Kconfig

···
 	  module. To compile this driver as a module, choose M here: the
 	  module will be called ftape.
 
-	  Note that the Ftape-HOWTO is out of date (sorry) and documents the
-	  older version 2.08 of this software but still contains useful
-	  information.  There is a web page with more recent documentation at
-	  <http://www.instmath.rwth-aachen.de/~heine/ftape/>.  This page
-	  always contains the latest release of the ftape driver and useful
-	  information (backup software, ftape related patches and
-	  documentation, FAQ).  Note that the file system interface has
-	  changed quite a bit compared to previous versions of ftape.  Please
-	  read <file:Documentation/ftape.txt>.
-
 source "drivers/char/ftape/Kconfig"
 
 endmenu

drivers/char/ftape/Kconfig

···
 	  support", above) then `zft-compressor' will be loaded
 	  automatically by zftape when needed.
 
-	  Despite its name, zftape does NOT use compression by default.  The
-	  file <file:Documentation/ftape.txt> contains a short description of
-	  the most important changes in the file system interface compared to
-	  previous versions of ftape.  The ftape home page
-	  <http://www.instmath.rwth-aachen.de/~heine/ftape/> contains
-	  further information.
-
-	  IMPORTANT NOTE: zftape can read archives created by previous
-	  versions of ftape and provide file mark support (i.e. fast skipping
-	  between tape archives) but previous version of ftape will lack file
-	  mark support when reading archives produced by zftape.
+	  Despite its name, zftape does NOT use compression by default.
 
 config ZFT_DFLT_BLK_SZ
 	int "Default block size"