tests: Remove bogus RTEMS_INTERRUPT_LEVEL(31)

It is unnecessary to run these test cases with interrupts disabled.

testsuites/sptests/sp01/init.c

@@ -34,7 +34,7 @@ rtems_task Init(
     rtems_build_name( 'T', 'A', '1', ' ' ),
     1,
     RTEMS_MINIMUM_STACK_SIZE * 2,
-    RTEMS_INTERRUPT_LEVEL(31),
+    RTEMS_DEFAULT_MODES,
     RTEMS_DEFAULT_ATTRIBUTES,
     &id
   );

testsuites/sptests/spcbssched01/init.c

@@ -49,7 +49,7 @@ rtems_task Init(
      Task_name[ 1 ],
      1,
      RTEMS_MINIMUM_STACK_SIZE * 2,
-     RTEMS_INTERRUPT_LEVEL(31),
+     RTEMS_DEFAULT_MODES,
      RTEMS_DEFAULT_ATTRIBUTES,
      &Task_id[ 1 ]
   );

testsuites/sptests/spedfsched01/init.c

@@ -49,7 +49,7 @@ rtems_task Init(
      Task_name[ 1 ],
      1,
      RTEMS_MINIMUM_STACK_SIZE * 2,
-     RTEMS_INTERRUPT_LEVEL(31),
+     RTEMS_DEFAULT_MODES,
      RTEMS_DEFAULT_ATTRIBUTES,
      &Task_id[ 1 ]
   );

testsuites/sptests/spfifo03/init.c

@@ -123,7 +123,7 @@ void test_main(void) /* Also acts as the write task */
 			     readTaskName,
 			     1,
 			     RTEMS_MINIMUM_STACK_SIZE * 2,
-			     RTEMS_INTERRUPT_LEVEL(31),
+			     RTEMS_DEFAULT_MODES,
 			     RTEMS_DEFAULT_ATTRIBUTES,
 			     &readTaskID
 			     );

testsuites/sptests/spfifo05/init.c

@@ -167,7 +167,7 @@ rtems_task Init(
 			     readTaskName,
 			     1,
 			     RTEMS_MINIMUM_STACK_SIZE * 2,
-			     RTEMS_INTERRUPT_LEVEL(31),
+			     RTEMS_DEFAULT_MODES,
 			     RTEMS_DEFAULT_ATTRIBUTES,
 			     &readTaskID
 			     );