update Readme to reflect changes (last commit)

Author: condmatr

README.md

@@ -14,7 +14,3 @@ sys.path.append('PATH-TO-ELPHONPY')
 
 Prerequisite packages:
 pymatgen, numpy, matplotlib.pyplot
-
-Programs that are used in some ElphonPy functions:
-
-read_relax_output --> pwo2xsf.sh (found in ~/qe-installation/PW/tools, and should be added to your .bashrc PATH.)