Remove option is far away when removing an attached picture from content filed

[Evan Wang]

$ system-image-cli -i
current build number: 414
device name: arale
channel: ubuntu-touch/rc-proposed/meizu.en
last update: 2016-09-04 20:41:31
version version: 414
version ubuntu: 20160903
version device: 20160526-af18709
version custom: 20160831-991-22-15

Steps to reproduce:
1. Launch messaging app
2. Compose a new message
3. Attach a picture to text field by tapping on clip icon
4. Remove the attached picture by long press on it
5. Appears the 'Remove' option

Actual results:
The 'Remove' option is displayed in the middle of the screen, probably a bit far away from the text field, if rotate device to landscape mode will see the 'Remove' option is displayed stick to the text field above.

[Evan Wang (wsy324)]

Rotated device to landscape mode.