alpha: drop unused Kconfig symbol

Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Reviewed-by: NMatt Turner <mattst88@gmail.com>
Signed-off-by: NMichal Marek <mmarek@suse.cz>

arch/alpha/Kconfig

@@ -445,11 +445,6 @@ config ALPHA_EV67
 	  Is this a machine based on the EV67 core?  If in doubt, select N here
 	  and the machine will be treated as an EV6.
 
-config ALPHA_EV7
-	bool
-	depends on ALPHA_MARVEL
-	default y
-
 config ALPHA_MCPCIA
 	bool
 	depends on ALPHA_RAWHIDE