ENH: Remove UploadBinaryData.sh script

Per InsightSoftwareConsortium#3760, no longer necessary. As now documented in
Documentation/UploadBinaryData.md, a simple bash function equivalent is:

```
function w3externaldata() { w3 put $1 --no-wrap | tail -n 1 | awk -F "/ipfs/" '{print $2}' | tee $1.cid }
```

Utilities/GitSetup/setup-git-aliases

@@ -14,6 +14,3 @@ git config alias.gerrit-push \
 # Useful alias to see what commits are on the current branch with respect to
 # upstream/master
 git config alias.prepush 'log --graph --stat upstream/master..'
-
-# Alias to the script to upload testing data
-git config alias.data-upload "!bash Utilities/UploadBinaryData.sh"