kill off CollaboratorsHandler. changeUsersPrivilegeLevel as it is not used anywhere

services/web/app/coffee/Features/Collaborators/CollaboratorsHandler.coffee

@@ -19,11 +19,6 @@ module.exports =
 				logger.err err: err, "problem removing user from project collaberators"
 			callback(err)
 
-	changeUsersPrivilegeLevel: (project_id, user_id, newPrivalageLevel, callback = ->)->
-		@removeUserFromProject project_id, user_id, =>
-		  User.findById user_id, (err, user)=>
-			  @addUserToProject project_id, user_id, newPrivalageLevel, callback
-
 	addUserToProject: (project_id, email, privilegeLevel, callback)->
 		emails = mimelib.parseAddresses(email)
 		email = emails[0]?.address?.toLowerCase()

services/web/test/UnitTests/coffee/Collaborators/CollaboratorsHandlerTests.coffee

@@ -31,19 +31,6 @@ describe "CollaboratorsHandler", ->
 		@project_id = "123l2j13lkj"
 		@user_id = "132kj1lk2j"
 
-	describe "changeUsersPrivilegeLevel", ->
-
-
-		it "should call removeUserFromProject then addUserToProject", (done)->
-			@CollaboratorHandler.removeUserFromProject = sinon.stub().callsArgWith(2)
-			@CollaboratorHandler.addUserToProject = sinon.stub().callsArgWith(3)
-			newPrivalageLevel = "readAndWrite"
-			@CollaboratorHandler.changeUsersPrivilegeLevel @project_id, @user_id, newPrivalageLevel, =>
-				@CollaboratorHandler.removeUserFromProject.calledWith(@project_id, @user_id).should.equal true
-				@CollaboratorHandler.addUserToProject.calledWith(@project_id, @user_id, newPrivalageLevel)
-				done()
-
-
 	describe "removeUserFromProject", ->
 
 		beforeEach ->