chore: revert add download callback (#326)

This reverts commit ff8a7c2.

Author: Stratus3D

Diff for: .github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
         uses: actions/checkout@v2
       - name: Install system packages on Ubuntu
         if: ${{ runner.os == 'Linux' }}
-        run: sudo apt-get update; sudo apt-get -y install build-essential autoconf m4 libncurses5-dev libwxgtk3.2-dev libgl1-mesa-dev libglu1-mesa-dev libpng-dev libssh-dev xsltproc fop libxml2-utils libncurses-dev
+        run: sudo apt-get update; sudo apt-get -y install build-essential autoconf m4 libncurses5-dev libwxgtk3.0-gtk3-dev libgl1-mesa-dev libglu1-mesa-dev libpng-dev libssh-dev xsltproc fop libxml2-utils libncurses-dev
 
       - name: Install system packages on macOS
         if: ${{ runner.os == 'macOS' }}