Removing the -m and the f**king -F option to less.

-m was not wanted anymore.
-F implementation has changed. It used to make less behave like cat
   if the text could fit the terminal, now it displays nothing. I
   know the later is the intended behavior, however it makes this
   option absolutely awful when used in psql and there is no known
   replacement.

.psqlrc

@@ -1,5 +1,5 @@
 \timing on
-\setenv LESS -imx4F
+\setenv LESS -ix4
 \x auto
 \pset null '[NULL]'