Revert "[Kevin Hu] Fix bug 996549"

This reverts commit 917f925b647b39b1e3a78e2e8b259e28f1af085a.
Bug 973436 - Refactor the battery panel using AMD modules
Merge pull request #18319 from crh0716/973436_v2

Bug 973436 - Refactor the battery panel using AMD modules r=evelyn
Bug 996549 - Wifi Hotspot settings SSID network name should NOT accept more than 32 chars
Merge pull request #18077 from comoyo/bug993390

Bug 993390 - Don't do a sync reflow if we just cleared the element. r=timdream
Merge pull request #18403 from kaichih/Bug-996549

Bug 996549 - Wifi Hotspot settings SSID network name should NOT accept m...
Bug 993952 - Position inactive keyboards off screen instead of display: none
 - Move panels fully out of viewport
Merge pull request #18353 from DimiL/master

Bug 996869 - Join hidden network gives error. r=crh0716
Merge pull request #18386 from gurumukhi/patch-12

Bug 973484 - Remove workaround of bug 783076, r=timdream
Merge pull request #18258 from Rik/remove-non-promise-995630

Bug 995630 - Remove Gaia code that supported the old mozTelephony.dial/d... r=etienne
Merge pull request #18367 from RudyLu/keyboard/Bug993952-squash

Bug 993952 - Position inactive keyboards off screen instead of display: ...
r=rudylu
Bug 997623 - NFC: typo for NDEF_FORMATABLE. r=alive
Bug 993961 - [Camera] Fix unit tests in B2G Desktop r=dmarcos

Introduces a Audio mock so that we're not affected by the platform differences.
Merge pull request #15926 from yzen/964544

Bug 964544 - adding Gaia-ui accessibility tests for the dialer/phone app.
Bug 997633 - Update Python marionette_client to 0.7.6
Merge pull request #17543 from zacc/bug_987034

Bug 987034 - Increase timeout for test_video_* python tests r=askeing
Bug 996470 - [NFC] Default NFC setting is ON. r=arthurcc
Bug 969484 - [VDR][Settings] Apply Buttons and Input areas [BB]
Merge pull request #18413 from allstarschh/Bug996470

Bug 996470 - [NFC] Default NFC setting is ON. r=arthurcc
Bug 996528 - Revive gaia keyboard in firefox nightly. r=vingtetun