Pass environment role choices directly from the view to the template instead of via the form

atst/forms/edit_member.py

@@ -1,17 +1,15 @@
 from flask_wtf import FlaskForm
-from wtforms.validators import Optional, Required
+from wtforms.validators import Required
 
 from atst.forms.fields import SelectField
 
-from .data import WORKSPACE_ROLES, ENVIRONMENT_ROLES
+from .data import WORKSPACE_ROLES
 
 
 class EditMemberForm(FlaskForm):
+    # This form also accepts a field for each environment in each project
+    #  that the user is a member of
 
     workspace_role = SelectField(
         "Workspace Role", choices=WORKSPACE_ROLES, validators=[Required()]
     )
-
-    environment_role = SelectField(
-        "Environment Role", choices=ENVIRONMENT_ROLES, validators=[Optional()]
-    )