[improvement](python) remove virtualenv in python shell (#395)

assembly/bin/supersonic-common.sh

@@ -83,20 +83,6 @@ function runJavaService {
 function runPythonService {
   pythonRunDir=${runtimeDir}/supersonic-${model_name}/llmparser
   cd $pythonRunDir
-    # check if venv is available
-    if ! ${python_path} -c "import venv" &> /dev/null; then
-        echo "venv not found, installing virtualenv via pip..."
-        pip install virtualenv
-        # create a virtual environment using virtualenv
-        virtualenv venv
-    else
-        # create a virtual environment using venv
-        ${python_path} -m venv venv
-    fi
-    # activate the virtual environment
-    source venv/bin/activate
-    # install dependencies
-    pip install --upgrade -r requirements.txt
   nohup ${python_path} supersonic_llmparser.py  > $pythonRunDir/llmparser.log  2>&1   &
   # add health check
   for i in {1..10}