Remove unused file

A leftover of 1e27372b, where this wasn't deleted
5 jobs for master in 4 minutes and 46 seconds (queued for 1 second)
Status Job ID Name Coverage
  .Pre
passed #510733
preflight

00:00:09

 
  Build
passed #510735
README.pdf

00:00:46

passed #510734
tex

00:03:38

 
  Test
passed #510737
test-pdfs

00:00:55

passed #510736
test-self

00:00:54