gnat.adc: Allow exception handlers in pure Ada code

Change-Id: I5eb658f2ee0f55bb4f04da58e0e99bc9fc6780a5
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/21094
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/gnat.adc b/gnat.adc
index e9a1c80..3494eba 100644
--- a/gnat.adc
+++ b/gnat.adc
@@ -1,7 +1,6 @@
 pragma Restrictions (No_Allocators);
 pragma Restrictions (No_Calendar);
 pragma Restrictions (No_Dispatch);
-pragma Restrictions (No_Exception_Handlers);
 pragma Restrictions (No_Fixed_Point);
 pragma Restrictions (No_Floating_Point);
 pragma Restrictions (No_Implicit_Dynamic_Code);