Bug#977770: pdf.js-common is probably obsolete

[Pirate Praveen]

Package: pdf.js-common
Version: 2.6.347+dfsg-3
Severity: normal
I think this binary package is left over from the need to share files 
between xul-ext-pdf.js and libjs-pdf.

https://packages.debian.org/source/oldstable/pdf.js

With xul-ext-pdf.js removed, I think we can remove pdf.js-common as 
well adn ship relevant files in libjs-pdf.