ARROW-7849: [Packaging][Python] Remove the remaining py27 crossbow wheel tasks from the nightlies
ARROW-7849: [Packaging][Python] Remove the remaining py27 crossbow wheel tasks from the nightlies

Follow-up for #6410

Closes #6415 from kszucs/nightly-crossbow-tasks and squashes the following commits:

6a875144d <Krisztián Szűcs> Remove the remaining py27 crossbow wheel tasks from the nightlies

Authored-by: Krisztián Szűcs <6bab32dc957a05a87930e779f272342e159326fa@gmail.com>
Signed-off-by: Krisztián Szűcs <6bab32dc957a05a87930e779f272342e159326fa@gmail.com>

wesm/arrow,cpcloud/arrow,cpcloud/arrow,kou/arrow,apache/arrow,apache/arrow,cpcloud/arrow,kou/arrow,apache/arrow,laurentgo/arrow,cpcloud/arrow,xhochy/arrow,icexelloss/arrow,apache/arrow,cpcloud/arrow,xhochy/arrow,laurentgo/arrow,wesm/arrow,kou/arrow,laurentgo/arrow,xhochy/arrow,cpcloud/arrow,laurentgo/arrow,apache/arrow,wesm/arrow,apache/arrow,wesm/arrow,apache/arrow,laurentgo/arrow,kou/arrow,wesm/arrow,laurentgo/arrow,kou/arrow,laurentgo/arrow,apache/arrow,icexelloss/arrow,apache/arrow,laurentgo/arrow,xhochy/arrow,cpcloud/arrow,xhochy/arrow,kou/arrow,xhochy/arrow,cpcloud/arrow,xhochy/arrow,cpcloud/arrow,xhochy/arrow,laurentgo/arrow,kou/arrow,wesm/arrow,icexelloss/arrow,cpcloud/arrow,laurentgo/arrow,wesm/arrow,icexelloss/arrow,wesm/arrow,apache/arrow,icexelloss/arrow,wesm/arrow,xhochy/arrow,kou/arrow,apache/arrow,icexelloss/arrow,cpcloud/arrow,apache/arrow,wesm/arrow,kou/arrow,xhochy/arrow,icexelloss/arrow,wesm/arrow,icexelloss/arrow,kou/arrow,icexelloss/arrow,xhochy/arrow,cpcloud/arrow,icexelloss/arrow,wesm/arrow,icexelloss/arrow,xhochy/arrow,icexelloss/arrow,kou/arrow,wesm/arrow,wesm/arrow,laurentgo/arrow,apache/arrow,apache/arrow,icexelloss/arrow,kou/arrow,icexelloss/arrow,xhochy/arrow,cpcloud/arrow,xhochy/arrow,kou/arrow,laurentgo/arrow,laurentgo/arrow,laurentgo/arrow,kou/arrow,laurentgo/arrow,cpcloud/arrow,xhochy/arrow