Remove stray test file accidently commited (#6957)
Remove stray test file accidently commited (#6957)

In #6078 a test .tex file was accidently commited to the repo which
shouldn't have been. This commit corrects the oversight and removes the
file.
QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py,QISKit/qiskit-sdk-py