Fix manuals: don't mention (require 'org-install) anymore.

* org.texi (Installation): Don't mention org-install.el
anymore as the replacement file org-loaddefs.el is now loaded
by org.el.

* orgguide.texi (Installation): Ditto.

doc/org.texi

@@ -965,13 +965,6 @@ on your system).
 make install-info
 @end example
 
-Then add the following line to @file{.emacs}.  It is needed so that
-Emacs can autoload functions that are located in files not immediately loaded
-when Org mode starts.
-@lisp
-(require 'org-install)
-@end lisp
-
 Do not forget to activate Org as described in the following section.
 @page
 
@@ -1093,9 +1086,6 @@ shown below.
 ;; add latest org-mode to load path
 (add-to-list 'load-path (expand-file-name "/path/to/org-mode/lisp"))
 (add-to-list 'load-path (expand-file-name "/path/to/org-mode/contrib/lisp" t))
-
-;; activate org
-(require 'org-install)
 @end example
 
 If an error occurs, a backtrace can be very useful (see below on how to
@@ -14524,14 +14514,13 @@ Be sure to adjust the paths to fit your system.
 #
 DIR=`pwd`
 FILES=""
-ORGINSTALL="~/src/org/lisp/org-install.el"
 
 # wrap each argument in the code required to call tangle on it
 for i in $@@; do
     FILES="$FILES \"$i\""
 done
 
-emacs -Q --batch -l $ORGINSTALL \
+emacs -Q --batch \
 --eval "(progn
 (add-to-list 'load-path (expand-file-name \"~/src/org/lisp/\"))
 (add-to-list 'load-path (expand-file-name \"~/src/org/contrib/lisp/\" t))

doc/orgguide.texi

@@ -271,13 +271,6 @@ command:
 make
 @end smallexample
 
-Then add the following line to @file{.emacs}.  It is needed so that
-Emacs can autoload functions that are located in files not immediately loaded
-when Org-mode starts.
-@smalllisp
-(require 'org-install)
-@end smalllisp
-
 @node Activation, Feedback, Installation, Introduction
 @section Activation