remove useless dep install, no dependency is required with this fork

see https://github.com/fyne-io/systray#linuxbsd

Author: umbynos

.github/workflows/publish-go-tester-task.yml

@@ -93,11 +93,6 @@ jobs:
         with:
           go-version: ${{ env.GO_VERSION }}
 
-      # dependencies used for compiling the GUI
-      - name: Install Dependencies (Linux)
-        run: sudo apt update && sudo apt install -y --no-install-recommends build-essential libgtk-3-dev libwebkit2gtk-4.0-dev libappindicator3-dev
-        if: runner.os == 'Linux'
-
       - name: Install Task
         uses: arduino/setup-task@v1
         with:

.github/workflows/release.yml

@@ -62,11 +62,6 @@ jobs:
         with:
           go-version: "1.14"
 
-        # dependencies used for compiling the GUI
-      - name: Install Dependencies (Linux)
-        run: sudo apt update && sudo apt install -y --no-install-recommends build-essential libgtk-3-dev libwebkit2gtk-4.0-dev libappindicator3-dev
-        if: matrix.os == 'ubuntu-18.04'
-
       - name: Install Go deps
         # Since 10/23/2019 pwsh is the default shell
         # on Windows, but pwsh fails to install protoc-gen-go so

.github/workflows/test-go-task.yml

@@ -91,11 +91,6 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           version: 3.x
 
-        # https://github.com/getlantern/systray#linux
-      - name: Install Dependencies (Linux)
-        run: sudo apt update && sudo apt install -y --no-install-recommends build-essential libgtk-3-dev libwebkit2gtk-4.0-dev libappindicator3-dev
-        if: matrix.operating-system == 'ubuntu-latest'
-
       - name: Run tests
         env:
           GO_MODULE_PATH: ${{ matrix.module.path }}