disable speed and heading checks.
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bug 1090047: [MCTS] Geolocation: AssertError: Expected position.speed to be 'None' [See dependency tree for bug 1090047] 
add comment of disable speed and heading
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Bug 1090047: [MCTS] Geolocation: AssertError: Expected position.speed to be 'None' [See dependency tree for bug 1090047]       
add comment of disable speed and heading
Merge pull request #3 from oouyang/master

disable speed and heading checks.