staging: android: Remove unnecessary parentheses.

The removed parentheses are unnecessary and don't add readability.

Found using Coccinelle semantic patch:
@@ expression e, e1, e2; @@
e =
(
        (e1 == e2)
|
-       (e1)
+       e1
)

Signed-off-by: Elise Lennion <elise.lennion@gmail.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/ion_system_heap.c

@@ -30,7 +30,7 @@
 
 static gfp_t high_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO | __GFP_NOWARN |
 				     __GFP_NORETRY) & ~__GFP_RECLAIM;
-static gfp_t low_order_gfp_flags  = (GFP_HIGHUSER | __GFP_ZERO);
+static gfp_t low_order_gfp_flags  = GFP_HIGHUSER | __GFP_ZERO;
 static const unsigned int orders[] = {8, 4, 0};
 
 static int order_to_index(unsigned int order)