Revert "Fix IllegalStateException in getSupportedPowerMonitors API"

This reverts commit 6fed387e.

Reason for revert: DroidMonitor: Potential culprit for Bug b/310083260 - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Bug: 310083260
Change-Id: I2e66b682eb07641c9de169266dbbb9db4abcf3cc