Remove mention of http extra from README

README.rst

@@ -149,12 +149,11 @@ There are some extras available for ``wetterdienst``. Use them like:
 
 .. code-block:: bash
 
-    pip install wetterdienst[http,sql]
+    pip install wetterdienst[sql]
 
 - docs: Install the Sphinx documentation generator.
 - ipython: Install iPython stack.
 - export: Install openpyxl for Excel export and pyarrow for writing files in Feather- and Parquet-format.
-- http: Install HTTP API prerequisites.
 - sql: Install DuckDB for querying data using SQL.
 - duckdb: Install support for DuckDB.
 - influxdb: Install support for InfluxDB.