Update README.md

Arch linux version is out of date

Author: p3rcya

README.md

@@ -8,7 +8,6 @@
 - [OSX 10.8 and above](https://raw.githubusercontent.com/getlantern/lantern-binaries/master/lantern-installer-beta.dmg)
 - [Ubuntu 14.04 32 bit](https://raw.githubusercontent.com/getlantern/lantern-binaries/master/lantern-installer-beta-32-bit.deb)
 - [Ubuntu 14.04 64 bit](https://raw.githubusercontent.com/getlantern/lantern-binaries/master/lantern-installer-beta-64-bit.deb)
-- [Arch Linux](https://aur.archlinux.org/packages/lantern)
 
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