GODRIVER-3445 Remote submodule init subprocess

Author: prestonvasquez

.evergreen/config.yml

@@ -49,10 +49,6 @@ functions:
           # Define an alias for the task runner script.
           TASK_RUNNER_ALIAS: &task-runner src/go.mongodb.org/mongo-driver/.evergreen/run-task.sh
         args: [.evergreen/setup-system.sh]
-    - command: subprocess.exec
-      params:
-        binary: bash
-        args: [*task-runner, init-submodule]
     - command: expansions.update
       params:
         file: src/go.mongodb.org/mongo-driver/expansion.yml