msm: vidc: Remove Idle indicator configuration

For power collapse, idle check will be enabled by default
by venus fw. So no need to configure this property.

Change-Id: I8decb5874f24f9d0f50e874080694c3249499762
CRs-Fixed: 2194587
Signed-off-by: Shivendra Kakrania <shiven@codeaurora.org>