Revert "ARM: dts: msm: enable mpu6050 interrupt mode for 8939MTP"

This reverts commit 9b9e220f.

mpu6050 interrupt mode do not generate accurate time intervals
to process the sensor samples, switching back to polling mode.

Change-Id: I76cc1535eb49e932e6ce6d475fb58e4c031f704e
Signed-off-by: Ananda Kishore <kananda@codeaurora.org>
Signed-off-by: Bharat Pawar <bpawar@codeaurora.org>
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>