Revert "selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config"

This reverts commit 7492902e8d22b568463897fa967c0886764cf034.

The commit tried to address an issue discovered by Dan where he got
a message saying:

'usermode helper disabled so ignoring test'.

Dans's commit is forcing CONFIG_FW_LOADER_USER_HELPER_FALLBACK but just
having CONFIG_FW_LOADER_USER_HELPER suffices to emulate the_FALLBACK
functionality.

Dan's commit is trying to fix an issue which is hidden from a previous
commit. That issue will be addressed properly next.

Fixes: 7492902e8d22 ("selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config")
Cc: stable <[e-mail]>
Signed-off-by: Luis Chamberlain <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

tools/testing/selftests/firmware/config

···
 CONFIG_TEST_FIRMWARE=y
 CONFIG_FW_LOADER=y
 CONFIG_FW_LOADER_USER_HELPER=y
-CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y