regulator: tps65218: Remove unused enum tps65218_regulators

The enum tps65218_regulators is no longer being used after
commit 2dc4940360d4 ("regulator: tps65218: Remove all the compatibles").

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed