[unity] Minor: Removed leftover .meta file.

spine-unity/Assets/Spine Examples/Scripts/Sample Components/Legacy/CustomSkin.cs.meta

@@ -1,10 +0,0 @@
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-guid: 6e55c8477eccddc4cb5c3551a3945ca7
-MonoImporter:
-  serializedVersion: 2
-  defaultReferences: []
-  executionOrder: 0
-  icon: {instanceID: 0}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: