Remove unecessary meta file

ImageTemplates/HDRenderPipeline.meta

-fileFormatVersion: 2
-guid: 2c67fd3f469d5e1498d4ccc25b7bb86a
-folderAsset: yes
-timeCreated: 1504171941
-licenseType: Pro
-DefaultImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: