android: mail01: Remove 'mail_tests.sh' command test from the build.

Android doesn't have the command so no need to build the test for it.

Bug: 31225249
Test: Builds

Change-Id: I7d638d7e9ff0c893ec1ec126e7c9f3446f968fa2
Signed-off-by: Sandeep Patil <sspatil@google.com>
3 files changed