How do I end "Background items Added" Notification and/or Process?

bn.BUILD_KEY: Dropbox

bn.VERSION: 163.4.5456

bn.constants.WINDOWS_SHELL_EXT_VERSION: 57

bn.is_frozen: True

machine_id: c063ef3d-8d69-5445-9c18-9f52389f11f9

pid: 1039

ppid: 1

uid: 502

user_info: pwd.struct_passwd(pw_name='johnheffernan', pw_passwd='********', pw_uid=502, pw_gid=20, pw_gecos='John Heffernan', pw_dir='/Users/johnheffernan', pw_shell='/bin/bash')

effective_user_info: pwd.struct_passwd(pw_name='johnheffernan', pw_passwd='********', pw_uid=502, pw_gid=20, pw_gecos='John Heffernan', pw_dir='/Users/johnheffernan', pw_shell='/bin/bash')

euid: 502

gid: 20

egid: 20

group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root', 'johnheffernan', '_nsurlstoraged'])

effective_group_info: grp.struct_group(gr_name='staff', gr_passwd='*', gr_gid=20, gr_mem=['root', 'johnheffernan', '_nsurlstoraged'])

DYLD_LIBRARY_PATH: None

cwd: '/'

     real_path='/'

            mode=0o40755 uid=0 gid=0

     parent mode=0o40755 uid=0 gid=0

HOME: '/Users/johnheffernan'

appdata: '/Users/johnheffernan/.dropbox/instance1'

         real_path='/Users/johnheffernan/.dropbox/instance1'

                mode=0o40700 uid=502 gid=20

         parent mode=0o40700 uid=502 gid=20

dropbox_path: '/Users/johnheffernan/Library/CloudStorage/Dropbox'

              real_path='/Users/johnheffernan/Library/CloudStorage/Dropbox'

                    mode=0o40755 uid=502 gid=20

              parent mode=0o40755 uid=502 gid=20

sys_executable: '/Applications/Dropbox.app/Contents/MacOS/Dropbox'

                real_path='/Applications/Dropbox.app/Contents/MacOS/Dropbox'

                      mode=0o100755 uid=502 gid=20

                parent mode=0o40755 uid=502 gid=20

trace.__file__: '/Applications/Dropbox.app/Contents/Resources/python-packages.zip/dropbox/client/ui/common/boot_error.pyc'

                real_path='/Applications/Dropbox.app/Contents/Resources/python-packages.zip/dropbox/client/ui/common/boot_error.pyc'

                      not found

                parent not found

tempdir: '/var/folders/0z/wf0s01md3yd_lc2vy_m4t_vh0000gp/T'

         real_path='/private/var/folders/0z/wf0s01md3yd_lc2vy_m4t_vh0000gp/T'

                mode=0o40700 uid=502 gid=20

         parent mode=0o40755 uid=502 gid=20

Traceback (most recent call last):

  File "dropbox/client/main.pyc", line 5165, in _setup_root_for_account

  File "dropbox/sync_root/helpers.pyc", line 467, in get_root_for_account

  File "dropbox/foundation/futures/basic.pyc", line 853, in result

  File "dropbox/sync_root/handlers/macos/file_provider.pyc", line 121, in set_result_or_convert_exception

dropbox.mac.internal.MacError: [Errno -2001] Error Domain=NSFileProviderErrorDomain Code=-2001 "No valid file provider found with identifier ‘com.getdropbox.dropbox.fileprovider/a3368d78-5ea7-42b7-9c24-4513fa6fef58‘." UserInfo={NSLocalizedDescription=No valid file provider found with identifier ‘com.getdropbox.dropbox.fileprovider/a3368d78-5ea7-42b7-9c24-4513fa6fef58‘.}