chromium: Remove the plugin-pdf separate package.
chromium: Remove the plugin-pdf separate package.

Chromium has not shipped a separate libpdf.so since M42.

Additional details:
* https://bugs.chromium.org/p/chromium/issues/detail?id=453844
* https://codereview.chromium.org/902583003

Signed-off-by: Raphael Kubo da Costa <5fe4d20cf6ab8a2cf4e5e71d4c2d58346e96df0d@intel.com>

webdino/meta-browser,webdino/meta-browser,kraj/meta-browser,OSSystems/meta-browser,webdino/meta-browser,kraj/meta-browser,shr-distribution/meta-browser,kraj/meta-browser,kraj/meta-browser,schnitzeltony/meta-browser,twoerner/meta-browser,shr-distribution/meta-browser,twoerner/meta-browser,twoerner/meta-browser,schnitzeltony/meta-browser,shr-distribution/meta-browser,OSSystems/meta-browser,webdino/meta-browser,webdino/meta-browser,OSSystems/meta-browser,twoerner/meta-browser,schnitzeltony/meta-browser,shr-distribution/meta-browser,OSSystems/meta-browser,schnitzeltony/meta-browser