(Defining Minor Modes, Header Lines): Remove @tindex.

lispref/modes.texi

@@ -1365,7 +1365,6 @@ characters are reserved for major modes.)
 implementing a mode in one self-contained definition.
 
 @defmac define-minor-mode mode doc [init-value [lighter [keymap]]] keyword-args@dots{} body@dots{}
-@tindex define-minor-mode
 This macro defines a new minor mode whose name is @var{mode} (a
 symbol).  It defines a command named @var{mode} to toggle the minor
 mode, with @var{doc} as its documentation string.  It also defines a
@@ -2079,14 +2078,12 @@ top, just as it can have a mode line at the bottom.  The header line
 feature works just like the mode-line feature, except that it's
 controlled by different variables.
 
-@tindex header-line-format
 @defvar header-line-format
 This variable, local in every buffer, specifies how to display the
 header line, for windows displaying the buffer.  The format of the value
 is the same as for @code{mode-line-format} (@pxref{Mode Line Data}).
 @end defvar
 
-@tindex default-header-line-format
 @defvar default-header-line-format
 This variable holds the default @code{header-line-format} for buffers
 that do not override it.  This is the same as @code{(default-value