Revert "fixed “use Xcode 8.2 in travis environment [3a0673e]”"
Revert "fixed “use Xcode 8.2 in travis environment [3a0673e]”"

This reverts commit 436628394d4c42dc25cd5ae4a99c1471f6b42962.

simonracz/detox,simonracz/detox,simonracz/detox,simonracz/detox,simonracz/detox