Blackfin arch: scrub remaining ASSEMBLY usage since the switch to __ASSEMBLY__

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/include/asm-blackfin/mach-bf537/blackfin.h b/include/asm-blackfin/mach-bf537/blackfin.h
index bbd9705..f196588 100644
--- a/include/asm-blackfin/mach-bf537/blackfin.h
+++ b/include/asm-blackfin/mach-bf537/blackfin.h
@@ -43,7 +43,7 @@
 #include "defBF537.h"
 #endif
 
-#if !(defined(__ASSEMBLY__) || defined(ASSEMBLY))
+#if !defined(__ASSEMBLY__)
 #include "cdefBF534.h"
 
 /* UART 0*/