Remove unused isDeviceUUIDValid helper function

lib/helpers/helpers.coffee

@@ -1,11 +1,4 @@
 _ = require('lodash')
-resin = require('resin-sdk')
-
-exports.isDeviceUUIDValid = (uuid, callback) ->
-	resin.models.device.getAll (error, devices) ->
-		return callback?(error) if error?
-		uuidExists = _.findWhere(devices, { uuid })?
-		return callback(null, uuidExists)
 
 # TODO: Find a sane way to test streams
 exports.readStdin = (callback) ->

lib/helpers/helpers.spec.coffee

@@ -6,34 +6,6 @@ resin = require('resin-sdk')
 
 describe 'Helpers:', ->
 
-	describe '#isDeviceUUIDValid()', ->
-
-		devices = [
-			{ uuid: 1234 }
-			{ uuid: 5678 }
-		]
-
-		deviceGetAllStub = null
-
-		beforeEach ->
-			deviceGetAllStub = sinon.stub(resin.models.device, 'getAll')
-			deviceGetAllStub.yields(null, devices)
-
-		afterEach ->
-			deviceGetAllStub.restore()
-
-		it 'should return true if there is a device with that UUID', (done) ->
-			helpers.isDeviceUUIDValid devices[0].uuid, (error, isValid) ->
-				expect(error).to.not.exist
-				expect(isValid).to.be.true
-				done()
-
-		it 'should return false if there is not a device with that UUID', (done) ->
-			helpers.isDeviceUUIDValid 'invalidUUID', (error, isValid) ->
-				expect(error).to.not.exist
-				expect(isValid).to.be.false
-				done()
-
 	describe '#parseCredentials', ->
 
 		describe 'given colon separated credentials', ->