Remove redundant Dash log info (#257)

webviz_config/templates/webviz_template.py.jinja2

@@ -5,7 +5,6 @@
 # This file was generated by {{ author }} on {{ current_date }}.
 
 import logging
-import logging.config
 import threading
 import datetime
 import os.path as path
@@ -40,6 +39,7 @@ theme = webviz_config.WebvizConfigTheme("{{ theme_name }}")
 theme.from_json((Path(__file__).resolve().parent / "theme_settings.json").read_text())
 
 app = dash.Dash(__name__, external_stylesheets=theme.external_stylesheets)
+app.logger.setLevel(logging.WARNING)
 server = app.server
 
 app.title = "{{ title }}"