In T74240 support for LaTeX based rendering of the <math/>-tags was
removed. This change eliminates the unused code from the repository.
Bug: T195871
Change-Id: Ic57d83fa49f090b574ce8b82fd2ebc84a5350318
* Use the exactly same routines to deliver png images that are used in
mathml mode.
* Change the output to use mathoids png image rather than the mathml
and svg output.
* Locally tested on Firefox and Chrome: Depending on the mode either
the SVG or the PNG path is used.
Bug: T74240
Change-Id: I4b1cac92eb9a02190f316faab6621940951603d5
* currently the phpunit tests are not triggered by jenkins
* some test can't be re-enabled possible reasons:
** the texvc and texvccheck binaries are not available from jenkins
** the binaries can not be generated
** the path to the binaries are not set up correctly
Bug: T142120
Change-Id: I0c8fe5ad652c4663eeb029781521acbf56e42bad
