[CPUFREQ] Remove duplicate declaration of debug var from longhaul.

Spotted by Joe Perches.

I'm surprised gcc didn't at least warn about this.
Signed-off-by: Dave Jones <davej@redhat.com>

arch/i386/kernel/cpu/cpufreq/longhaul.c

@@ -42,7 +42,6 @@ static int vrmrev;
 /* Module parameters */
 static int dont_scale_voltage;
 static int debug;
-static int debug;
 
 static void dprintk(const char *msg, ...)
 {