Remove caching of picture processing display capability

Display capabilities cannot be read at hotplug because the display
capabilities are only loaded after the display power mode is set to ON.
This means that sometimes the picture processing capability is thought
to be false, because the display is not powered on.

Flag: EXEMPT bugfix
Test: Logging if the picture profile is sent to the HAL
Bug: 420934125
Change-Id: I7992eef96aeae0c4b44bcc5c3ba9cefdd9b2cb9a