ARM: configs: Remove REGULATOR_VIRTUAL_CONSUMER from defconfigs

The virtual consumer is a test device intended to be used while developing
regulator drivers, it should never be used in production. Remove it from
all defconfigs to avoid confusion among users.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>