chore(cpn): refactor firmware flashing to use edgetx rs_dfu (#6521)

Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com>

.github/workflows/macosx_cpn.yml

@@ -69,12 +69,6 @@ jobs:
       - name: Install dependencies
         run: python3 -m pip install --upgrade pip Pillow lz4 clang jinja2
 
-      - name: Install libusb
-        run:  brew install libusb
-
-      - name: Install dfu-util
-        run:  brew install dfu-util
-
       - name: Install SDL2
         run:  brew install SDL2
 

.github/workflows/win_cpn-64.yml

@@ -71,46 +71,6 @@ jobs:
           echo $PATH
           $Python3_ROOT_DIR/python3.exe -m pip install clang jinja2 lz4 pillow
 
-      - name: Setup dfu-util and libusb
-        run: |
-          #!/bin/bash
-          set -e
-    
-          echo "Setting up dfu-util and libusb..."
-    
-          # Create target directory
-          mkdir -p dfu-util-0.11
-    
-          # Download and extract dfu-util
-          echo "Downloading dfu-util binaries..."
-          curl -LO https://dfu-util.sourceforge.net/releases/dfu-util-0.11-binaries.tar.xz
-          tar -xf dfu-util-0.11-binaries.tar.xz
-          cp dfu-util-0.11-binaries/win64/dfu-util.exe dfu-util-0.11/
-    
-          # Install 7zip if not available
-          if ! command -v 7z &> /dev/null; then
-              echo "Installing 7zip..."
-              sudo apt-get update -qq
-              sudo apt-get install -y p7zip-full
-          fi
-    
-          # Download and extract libusb
-          echo "Downloading libusb..."
-          curl -LO https://github.com/libusb/libusb/releases/download/v1.0.29/libusb-1.0.29.7z
-          7z x -olibusb-1.0.29 libusb-1.0.29.7z > /dev/null
-          cp libusb-1.0.29/VS2022/MS64/dll/* dfu-util-0.11/
-    
-          # Clean up temporary files
-          rm -f dfu-util-0.11-binaries.tar.xz libusb-1.0.29.7z
-          rm -rf dfu-util-0.11-binaries libusb-1.0.29
-    
-          echo "Setup complete. Contents of dfu-util-0.11:"
-          ls -la dfu-util-0.11/
-
-          echo "LIBUSB1_ROOT_DIR=$(pwd)/dfu-util-0.11" >> $GITHUB_ENV
-          echo "DFU_UTIL_ROOT_DIR=$(pwd)/dfu-util-0.11" >> $GITHUB_ENV
-          
-
       - name: Setup MSVC
         uses: ilammy/msvc-dev-cmd@v1