enh: delete annexed GH action script

.github/workflows/update-superdataset.yml

@@ -1 +0,0 @@
-../../.git/annex/objects/JQ/PP/MD5E-s1416--3579e78394710b841fe2e8fbff15e61a.yml/MD5E-s1416--3579e78394710b841fe2e8fbff15e61a.yml