CI: Improve timeouts like "ConnectionError: No more Servers available"

Occasionally, the test suite would croak like:

  crate.client.exceptions.ConnectionError: No more Servers available, exception from last server: HTTPConnectionPool(host='127.0.0.1', port=44209): Read timed out. (read timeout=2)

By removing the "timeout=2" parameter, that error might go away on CI.

Author: amotl

src/crate/client/doctests/client.txt

@@ -102,7 +102,7 @@ Inserting Data
 
 Use user "crate" for rest of the tests::
 
-    >>> connection = client.connect([crate_host], timeout=2)
+    >>> connection = client.connect([crate_host])
 
 Before executing any statement, a cursor has to be opened to perform
 database operations::