alpha: Remove set but unused variables.

This is a new warning in gcc 4.6.  Several of these variables are
used within #if 0 code, which probably ought to be removed.  Most
of the changes are legitimate cleanups.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/alpha/kernel/smc37c93x.c b/arch/alpha/kernel/smc37c93x.c
index 3e6a289..6886b83 100644
--- a/arch/alpha/kernel/smc37c93x.c
+++ b/arch/alpha/kernel/smc37c93x.c
@@ -79,7 +79,6 @@
 static unsigned long __init SMCConfigState(unsigned long baseAddr)
 {
 	unsigned char devId;
-	unsigned char devRev;
 
 	unsigned long configPort;
 	unsigned long indexPort;
@@ -100,7 +99,7 @@
 		devId = inb(dataPort);
 		if (devId == VALID_DEVICE_ID) {
 			outb(DEVICE_REV, indexPort);
-			devRev = inb(dataPort);
+			/* unsigned char devRev = */ inb(dataPort);
 			break;
 		}
 		else