[fs.op.current.path] Remove note discussing design choices (#7620)

Author: jwakely

source/iostreams.tex

@@ -17731,12 +17731,6 @@
   with the process, that is used as the starting location in pathname resolution
   for relative paths.
 
-\pnum
-\begin{note}
-The \tcode{current_path()} name was chosen to emphasize that the returned value is a
-  path, not just a single directory name.
-\end{note}
-
 \pnum
 \begin{note}
 The current path as returned by many operating systems is a dangerous