staging: rtl8192u: Delete 'DM_CTSToSelfSetting' function in r8192U_dm.c
staging: rtl8192u: Delete 'DM_CTSToSelfSetting' function in r8192U_dm.c

Delete the DM_CTSToSelfSetting function that is not used in
anywhere in the driver.

Fix sparse warnings:
drivers/staging/rtl8192u/r8192U_dm.c:2623:6: warning: symbol 'DM_CTSToSelfSetting' was not declared. Should it be static?

Signed-off-by: Ana Rey <f8e8e2faffc65f8cee6706477d554bda98df43c6@gmail.com>
Acked-by: Luis R. Rodriguez <d4fa18192c5a479e564d29c2300c2e15afd1d8d7@do-not-panic.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs