Temporarily disable GPU power hold during LAUNCH boost

P21 has been using GPU power hold during app launch to mitigate jank
from GPU power on latency.
However this same mechanism seems causing instability (may be related
to the new inter-frame power optimization). While the root cause is
being investigated, disable the boost.

Bug: 223828284
Test: Build
Signed-off-by: Wei Wang <wvw@google.com>
Change-Id: Id04a1d09ebd5b36c1c7c55824da34bffb6435cab

powerhint.json

@@ -297,15 +297,6 @@
       ],
       "ResetOnInit": true
     },
-    {
-      "Name": "GPUPowerPolicy",
-      "Path": "/sys/devices/platform/28000000.mali/power_policy",
-      "Values": [
-        "always_on",
-        "adaptive"
-      ],
-      "ResetOnInit": true
-    },
     {
       "Name": "BigControlTempSet",
       "Path": "/dev/thermal/tz-by-name/BIG/trip_point_2_temp",
@@ -436,12 +427,6 @@
       "Duration": 5000,
       "Value": "3172000"
     },
-    {
-      "PowerHint": "LAUNCH",
-      "Node": "GPUPowerPolicy",
-      "Duration": 5000,
-      "Value": "always_on"
-    },
     {
       "PowerHint": "DISPLAY_INACTIVE",
       "Node": "F2fsRecessModeEnable",