build: remove special-thanks script

This script is not used.

(cherry picked from commit 8f1a333)

Author: alan-agius4

scripts/README.md

@@ -94,14 +94,6 @@ Flags:
   required.
 * `--githubTokenFile=<path>`. Reads the githubToken from a file instead of the command line (for CI).
 
-## special-thanks
-
-Calculates and output the list of special thanks.
-
-Flags:
-
-* `--sha=<git ref>`. The SHA to start the special thanks from. Calculates them from this sha to the HEAD.
-
 ## templates
 
 Compile and outputs the templates. For now, only README is being built and outputted.