Kconfig: delete duplicate word

Deleted a word which apeared twice.

Signed-off-by: Stephan Sperber <sperberstephan@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/init/Kconfig b/init/Kconfig
index 24932b9..2eec20c 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -179,7 +179,7 @@
 	depends on HAVE_KERNEL_LZO
 	help
 	  Its compression ratio is the poorest among the 4. The kernel
-	  size is about about 10% bigger than gzip; however its speed
+	  size is about 10% bigger than gzip; however its speed
 	  (both compression and decompression) is the fastest.
 
 endchoice