staging: rtl8192e: Remove unnecessary parentheses.

Challenge suggested by coccinelle.
Remove unnecessary parentheses around the right hand of
assignment using the below script.

@@
local idexpression id;
expression e;
@@

id =
-(
e
-)

@@ expression e, e1, e2,e3,e4; @@
e =
-(((e1) & (e2)) |
-(e3 << e4))
+(e1 & e2) |
+(e3 << e4)

Signed-off-by: Sanjana Sanikommu <sanjana99reddy99@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>