CI: The latest version of tclint doesn't have --show-categories option

See here: https://github.com/nmoroze/tclint/releases/tag/v0.5.0

Author: qwersem

.github/workflows/toolchain.yml

@@ -26,5 +26,4 @@ jobs:
 
       - name: Lint scripts
         run: |
-          tclint $(find dejagnu/ \( -name "arc*.exp" -o -name "nsim*.exp" \)) \
-            --show-categories
+          tclint $(find dejagnu/ \( -name "arc*.exp" -o -name "nsim*.exp" \))