Remove unnecessary sentence from documentation (GH-3302)
Remove unnecessary sentence from documentation (GH-3302)

0.11.2 is over a decade old at this point so people aiming to install
  earlier versions should probably just read the documentation for those
version. There aren't any footnotes in the documentation.
cython/cython,scoder/cython,da-woods/cython,da-woods/cython,scoder/cython,scoder/cython,cython/cython,cython/cython,cython/cython,da-woods/cython,scoder/cython,da-woods/cython