.github: stop making python python3

this isn't something we should be doing to people's environments

.github/workflows/cygwin_build.yml

@@ -187,7 +187,6 @@ jobs:
           PATH: /usr/bin:$(cygpath ${SYSTEMROOT})/system32
         shell: C:\cygwin\bin\bash.exe -eo pipefail '{0}'
         run: >-
-          ln -sf /usr/bin/python3.7 /usr/bin/python && ln -sf /usr/bin/pip3.7 /usr/bin/pip &&
           python3 -m pip install --progress-bar off empy==3.3.4 pexpect &&
           python3 -m pip install --progress-bar off dronecan --upgrade &&
           cp /usr/bin/ccache /usr/local/bin/ &&

.github/workflows/esp32_build.yml

@@ -176,8 +176,6 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install git wget libncurses-dev flex bison gperf python3 python3-pip python3-venv python3-setuptools python3-serial python3-gevent python3-cryptography python3-future python3-pyparsing python3-pyelftools cmake ninja-build ccache libffi-dev libssl-dev dfu-util libusb-1.0-0 cmake
-          sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10
-          update-alternatives --query python
           python3 --version
           pip3 install gevent
 
@@ -186,13 +184,10 @@ jobs:
           sudo apt-get update
           sudo apt-get install python3.11 python3.11-venv python3.11-distutils  -y
           sudo apt-get install python3 python3-pip python3-venv python3-setuptools python3-serial python3-cryptography python3-future python3-pyparsing python3-pyelftools
-          update-alternatives --query python
           pip3 install gevent
           python3 --version
           python3.11 --version
           which python3.11
-          sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.11 11
-          update-alternatives --query python
 
           git submodule update --init --recursive --depth=1
           ./Tools/scripts/esp32_get_idf.sh