Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/e30273e5aca9
Author: Hans Liss <Hans@Liss.nu>
Desc: Bug 906767 - Swedish keyboard layout. r=rudylu

Removed country distinction for Swedish keyboard layout

Removed country marker on sv keyboard layout name