Update meta for 2019.4.

Samples/UIWidgetsSamples_2019_4/Assets/Resources/file_example_MOV_480_700kB.mov.meta

 VideoClipImporter:
   externalObjects: {}
   serializedVersion: 2
-  useLegacyImporter: 0
-  quality: 0.5
-  isColorLinear: 0
   frameRange: 0
   startFrame: -1
   endFrame: -1