Remove"Add your Instagram account" from setup page of photo scope since it has been dropped now

[TarotChen]

current build number: 15
device name: frieza
channel: ubuntu-touch/rc/bq-aquaris-pd.en
last update: 2016-07-04 18:00:02
version version: 15
version ubuntu: 20160629
version tag: OTA-12-rc
version device: 20160622.0
version custom: 20160624--41-15-vivid

Steps:
1.Fresh the device
2.Navigate to Photos scope
3.Scroll down and up through contents of setup page

Actual result:
"Add your Instagram account" is displayed

Expected result:
Should remove it because instagram is dropped from ota12