CI: Remove input from slicer install

Author: SebGoll

.github/actions/install-slicer/action.yml

@@ -1,10 +1,6 @@
 name: install-slicer
 author: Sebastien Goll (Kitware SAS)
 description: Install 3D Slicer
-inputs:
-  version:
-    description: Version of Slicer available at https://community.chocolatey.org/packages/3dslicer#versionhistory
-    default: ''
 outputs:
   slicer_executable:
     description: Slicer executable
@@ -75,4 +71,4 @@ runs:
         elif [ ${{ runner.os }} == "macOS" ]; then
           echo "executable=${{ steps.mac_install.outputs.executable }}" >> $GITHUB_OUTPUT
         fi
-      shell: bash
+      shell: bash