Also delete two stray patches that were added in
92ae98e2a0 and lost in a subsequent merge
(mupdf/fixed was already gone at e90e0fad1b).
* gnu/packages/patches/mupdf-CVE-2017-5896.patch,
gnu/packages/patches/mupdf-CVE-2017-5991.patch,
gnu/packages/patches/mupdf-mujs-CVE-2016-10132.patch,
gnu/packages/patches/mupdf-mujs-CVE-2016-10133.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Remove them.
* gnu/packages/patches/mupdf-build-with-openjpeg-2.1.patch: Adjust.
* gnu/packages/pdf.scm (mupdf): Update to 1.11.
[source]: Remove mujs patches. Adjust snippet to source rename.