android/tester: Add missing hook removal
android/tester: Add missing hook removal

Missing hook removal was resulting in memory leak:
936 bytes in 39 blocks are definitely lost in loss record 42 of 45
==15026==    at 0x4C2AB80: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==15026==    by 0x407D60: btdev_add_hook (btdev.c:3226)
==15026==    by 0x40EB75: read_info_callback (tester-main.c:364)
==15026==    by 0x4142B5: request_complete (mgmt.c:245)
==15026==    by 0x41441A: can_read_data (mgmt.c:349)
==15026==    by 0x41663C: read_callback (io-glib.c:170)
==15026==    by 0x5083CE4: g_main_context_dispatch (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.4002.0)
==15026==    by 0x5084047: ??? (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.4002.0)
==15026==    by 0x5084309: g_main_loop_run (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.4002.0)
==15026==    by 0x4162D0: tester_run (tester.c:815)
==15026==    by 0x40263E: main (tester-main.c:2716)

mapfau/bluez,ComputeCycles/bluez,pkarasev3/bluez,mapfau/bluez,mapfau/bluez,pstglia/external-bluetooth-bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,pstglia/external-bluetooth-bluez,pkarasev3/bluez,ComputeCycles/bluez,pkarasev3/bluez,silent-snowman/bluez,silent-snowman/bluez,mapfau/bluez,ComputeCycles/bluez