Removed unused Android.mk under device/google/contexthub

Modules in these Android.mk files will only be built if
"TARGET_USES_NANOHUB_SENSORHAL=true".
However, this flag can only be set to true if TARGET_SENSOR_MEZZANINE
is defined, which only occurs in
"vendor/panasonic/seahawk/opensource/sensors/.../BoardConfigInvn.mk".

No devices that include the relevant makefiles inherit from this
configuration, making it impossible for TARGET_USES_NANOHUB_SENSORHAL to
be true.

Therefore, the modules in these Android.mk files are unused and can be
safely removed.

Bug: 341867323
Bug: 342284348
Test: N/A
Change-Id: I705c9b3cb8706bf3310c26cea2bc2f1cdf239e18
2 files changed