Bug #639172: Remove "Warning!! This is a DEVELOPMENT version .." tip of the day

Also, to my knowledge the docs don't contain a "what's new in 2.4" section,
so I removed that tip as well.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@20071 57a11ea4-9604-0410-9ed3-97b8803252fd

doc/tip_of_the_day.list.in

@@ -1,12 +1,5 @@
- N_( "Warning!! This is a DEVELOPMENT version of GnuCash. \
-It probably has lots of bugs and unstable features! \
-If you are looking for a stable personal finance application, \
-you should use the latest release of GnuCash %s.")|@-GNUCASH_LATEST_STABLE_SERIES-@
-
  N_( "The GnuCash online manual has lots of helpful information. \
-If you are upgrading from earlier versions of GnuCash, the section \
-\"What's new in GnuCash 2.0\" is particularly interesting. You can \
-access the manual under the Help menu.")
+You can access the manual under the Help menu.")
 
  N_( "You can easily import your existing financial data from Quicken, \
 MS Money or other programs that export QIF files or OFX files.  In the \