Removing packages continuously failing to build for Indigo

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pr2_self_test depends on pr2_bringup_tests
pr2_robot depends on pr2_bringup
pr2_bringup depends on pr2_camera_synchronizer
pr2_camera_synchronizer failing pending release with PR2/pr2_robot#252 included

jsk_arc2017_baxter failing to build daily for 1 month.
jsk_apc depends on above
It looks like a missing dependency:

23:34:46 -- catkin 0.6.19
23:34:46 CMake Warning at /opt/ros/indigo/share/catkin/cmake/catkinConfig.cmake:76 (find_package):
23:34:46   Could not find a package configuration file provided by
23:34:46   "force_proximity_ros" with any of the following names:
23:34:46 
23:34:46     force_proximity_rosConfig.cmake
23:34:46     force_proximity_ros-config.cmake
23:34:46 
23:34:46   Add the installation prefix of "force_proximity_ros" to CMAKE_PREFIX_PATH
23:34:46   or set "force_proximity_ros_DIR" to a directory containing one of the above
23:34:46   files.  If "force_proximity_ros" provides a separate development package or
23:34:46   SDK, be sure it has been installed.
23:34:46 Call Stack (most recent call first):
23:34:46   CMakeLists.txt:4 (find_package)
23:34:46 
23:34:46 
23:34:46 -- Could not find the required component 'force_proximity_ros'. The following CMake error indicates that you either need to install the package with the same name or change your environment so that it can be found.
23:34:46 CMake Error at /opt/ros/indigo/share/catkin/cmake/catkinConfig.cmake:83 (find_package):
23:34:46   Could not find a package configuration file provided by
23:34:46   "force_proximity_ros" with any of the following names:
23:34:46 
23:34:46     force_proximity_rosConfig.cmake
23:34:46     force_proximity_ros-config.cmake
23:34:46 
23:34:46   Add the installation prefix of "force_proximity_ros" to CMAKE_PREFIX_PATH
23:34:46   or set "force_proximity_ros_DIR" to a directory containing one of the above
23:34:46   files.  If "force_proximity_ros" provides a separate development package or
23:34:46   SDK, be sure it has been installed.
23:34:46 Call Stack (most recent call first):
23:34:46   CMakeLists.txt:4 (find_package)
23:34:46 

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@TheDash @k-okada FYI