README update

README.md

@@ -9,7 +9,6 @@ Prerequisites:
 
 - [meson](https://mesonbuild.com/)
 - a C compiler with C18 support (e.g. `gcc>8.1`, `clang>7.0`)
-- a C++ compiler with C++17 support (e.g. `gcc>8.0` `clang>5.0`)
 - the [libpcre](http://www.pcre.org/) development library
 - the [sqlite3](https://www.sqlite.org/) development library, version 3.31.0 or
   newer for [generated columns](https://www.sqlite.org/gencol.html) support