[GH Actions] Remove JDK 11 step from Android workflows
Summary:
Similar to D8687, JDK 11 is included on Ubuntu 22.04 runners:
(https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2204-Readme.md#java)
Depends on D8687
Test Plan:
Tested on fork and observed that Gradle build worked until the disk usage issue:
https://github.com/atulsmadhugiri/comm/commit/047684683ebd028998cb64fc8d863f1550f1f0d8
https://github.com/atulsmadhugiri/comm/actions/runs/5719255687/job/15496765219
Reviewers: ashoat, ginsu, tomek, jon, marcin
Reviewed By: ashoat
Differential Revision: https://phab.comm.dev/D8688