chore: api generator was moved to influxdb-clients-apigen (#145)

Author: rhajek

CHANGELOG.md

@@ -4,7 +4,8 @@
 1. [#140](https://github.com/influxdata/influxdb-client-python/pull/140): Added exponential backoff strategy for batching writes, Allowed to configure default retry strategy. Default value for `retry_interval` is 5_000 milliseconds.   
 1. [#136](https://github.com/influxdata/influxdb-client-python/pull/136): Allows users to skip of verifying SSL certificate
 1. [#143](https://github.com/influxdata/influxdb-client-python/pull/143): Skip of verifying SSL certificate could be configured via config file or environment properties
-1. [#141](https://github.com/influxdata/influxdb-client-python/pull/141): Added possibility to use datetime nanoseconds precision by `pandas.Timestamp`  
+1. [#141](https://github.com/influxdata/influxdb-client-python/pull/141): Added possibility to use datetime nanoseconds precision by `pandas.Timestamp`
+1. [#145](https://github.com/influxdata/influxdb-client-python/pull/145): Api generator was moved to influxdb-clients-apigen  
 
 ## 1.9.0 [2020-07-17]