Remove dmarting@ from list of admins
Remove dmarting@ from list of admins

dmarting@ has moved to another project, so probably doesn't want to do
code review for this repo.

Change-Id: Icac9d2236dc636973d1d64b3048cc4a96de925e6

bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration