removed not needed environmental variables

examples/streamlit/src/config.py

@@ -1,13 +0,0 @@
-import os
-
-
-class EnvironmentalVariableNames:
-    """ Defines the names of the environmental variables used in the code and useful shortcuts"""
-
-    # Environmental variables
-    WORKING_DIR = "WORKING_DIR"
-
-
-def get_env(env_var):
-    """ Returns the value of the environment variable env_var """
-    return os.environ[env_var]