Revert "Skip multi-device tests instead of abort if device is non-B+ devices"

This reverts commit 372a15220afd408b0f9101bfbc2c08503cc0d8d9.

Reason for revert: this is Android B+ CTS and shouldn't be run with previous release, this can help to catch human error.

Change-Id: I867c63511d4f640e07b8317506291de284efcef3
1 file changed