Remove if: runner.os == 'Linux' where not needed

Keep the step name "Install dependencies (Linux)" in case dependencies change later, to make changing all of them simpler

Author: will-v-pi

.github/workflows/check_help_text.yml

@@ -13,7 +13,6 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install dependencies (Linux)
-        if: runner.os == 'Linux'
         run: sudo apt install cmake ninja-build python3 build-essential libusb-1.0-0-dev
 
       - name: Checkout Pico SDK

.github/workflows/check_precompiled.yml

@@ -13,7 +13,6 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install dependencies (Linux)
-        if: runner.os == 'Linux'
         run: sudo apt install cmake ninja-build python3 build-essential gcc-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib libusb-1.0-0-dev
 
       - name: Checkout Pico SDK