docs: Remove Google Analytics from APISIX Website

[niallkp]

Current State

Hi APISIX Team,

The use of Google Analytics and Tag Manager is not permitted by the ASF Privacy Policy[1][2][3]. Please could you remove it from the APISIX Website?

Thanks
Niall
(on behalf of the ASF Privacy Committee)

[1] https://privacy.apache.org/policies/website-policy.html
[2] https://privacy.apache.org/faq/committers.html#can-i-use-google-analytics
[1] https://privacy.apache.org/policies/privacy-policy-public.html

Desired State

From GitHub it looks like you are already using Matomo for analytics and I can't find a reference to Google Analytics in GitHub, but the published website still uses it.

[guoqqqi]

I will fix this

[niallkp]

Thank You @guoqqqi - much appreciated!