Remove duplicate listing of Cris arch from README

Mikael Pettersson pointed out to me that a recent patch of mine (commit
620034c84d), that made some corrections to the
README file, accidentally listed the Cris architecture twice.  Whoops.

This patch removes the duplicate.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

README

@@ -24,7 +24,7 @@ ON WHAT HARDWARE DOES IT RUN?
   today Linux also runs on (at least) the Compaq Alpha AXP, Sun SPARC and
   UltraSPARC, Motorola 68000, PowerPC, PowerPC64, ARM, Hitachi SuperH, Cell,
   IBM S/390, MIPS, HP PA-RISC, Intel IA-64, DEC VAX, AMD x86-64, AXIS CRIS,
-  Cris, Xtensa, AVR32 and Renesas M32R architectures.
+  Xtensa, AVR32 and Renesas M32R architectures.
 
   Linux is easily portable to most general-purpose 32- or 64-bit architectures
   as long as they have a paged memory management unit (PMMU) and a port of the