media: Remove superfluous dependency for MEDIA_SUPPORT_FILTER

The MEDIA_SUPPORT_FILTER configuration option is located inside a block
protected by "#if MEDIA_SUPPORT", so there is no need to have an
explicit dependency on MEDIA_SUPPORT.  Drop it.

Fixes: c6774ee0 ("media: Kconfig: make filtering devices optional")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>