defining SYSTEM_EV5 isn't all that necessary

--HG--
extra : convert_revision : 7d39dd9f814434cb95ec769204d7f2426b0290fd

arch/alpha/ev5.hh

@@ -3,10 +3,6 @@
 #ifndef __EV5_H__
 #define __EV5_H__
 
-#ifndef SYSTEM_EV5
-#error This code is only valid for EV5 systems
-#endif
-
 #define MODE2MASK(X)			(1 << (X))
 
 // Alpha IPR register accessors

build/SConstruct

@@ -93,7 +93,7 @@ def AlphaConfig(env):
 def KernelConfig(env):
     env.Replace(TARGET_ISA = 'alpha')
     env.Replace(FULL_SYSTEM = True)
-    env.Append(CPPDEFINES = ['FULL_SYSTEM', 'SYSTEM_EV5'])
+    env.Append(CPPDEFINES = ['FULL_SYSTEM'])
 
 # Base configurations map.
 configs_map = {