staging: rts5208: remove redundant sd30_mode checks

staging: rts5208: remove redundant sd30_mode checks

There are two hunks of code that check if sd30_mode is true however
an earlier check in an outer code block on sd30_mode being false means
that sd30_mode can never be true at these points so these checks are
redundant.  Remove the dead code.

Addresses-Coverity: ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190830081047.13630-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>