doc: invalid doc link in rstFlatTable.py

Remove an invalid documentation link in rstFlatTable.py. This synchronizes
the file with Linux next-20200413.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/doc/sphinx/rstFlatTable.py b/doc/sphinx/rstFlatTable.py
index f9a4b46..2019a55 100755
--- a/doc/sphinx/rstFlatTable.py
+++ b/doc/sphinx/rstFlatTable.py
@@ -53,8 +53,6 @@
 # common globals
 # ==============================================================================
 
-# The version numbering follows numbering of the specification
-# (doc/books/kernel-doc-HOWTO).
 __version__  = '1.0'
 
 PY3 = sys.version_info[0] == 3