Remove mention of app being freely available

There is some chance WARF will want to monetize it.

README.md

@@ -7,7 +7,7 @@ that allows one to take molecular structures and synthetically generate
 a nmrPipe FT2 file that predicts NMR peak locations.
 
 BPHON was designed by the team at NMRFAM at the University of Wisconsin
-at Madison. Development began in 2023. It is freely available for use.
+at Madison. Development began in 2023.
 
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