Pylint fixes

Pylint now checks for trailing new lines, this commit fixes them.

wlauto/devices/linux/XE503C12/__init__.py

@@ -33,4 +33,3 @@ class Xe503c12Chormebook(LinuxDevice):
     ]
 
     abi = 'armeabi'
-

wlauto/devices/linux/__init__.py

@@ -12,5 +12,3 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-
-

wlauto/devices/linux/chromeos_test_image/__init__.py

@@ -97,4 +97,3 @@ class ChromeOsDevice(LinuxDevice):
         else:
             pass
         self.ui_status = None
-

wlauto/devices/linux/odroidxu3_linux/__init__.py

@@ -32,4 +32,3 @@ class OdroidXU3LinuxDevice(LinuxDevice):
     ]
 
     abi = 'armeabi'
-