remove docs on DISABLE_TERM_HANDLER (#543)

Author: alexrashed

content/en/references/configuration.md

@@ -328,7 +328,6 @@ python -m localstack.cli.main --profile=dev config show
 | `OUTBOUND_HTTP_PROXY` | `http://10.10.1.3` | HTTP Proxy used for downloads of runtime dependencies and connections outside LocalStack itself
 | `OUTBOUND_HTTPS_PROXY` | `https://10.10.1.3` | HTTPS Proxy used for downloads of runtime dependencies and connections outside LocalStack itself
 | `REQUESTS_CA_BUNDLE` | `/var/lib/localstack/lib/ca_bundle.pem` | CA Bundle to be used to verify HTTPS requests made by LocalStack
-| `DISABLE_TERM_HANDLER` | | Whether to disable signal passing to LocalStack when running in docker. Enabling this will prevent an orderly shutdown when running inside LS in docker.
 
 
 ## Debugging