Replace Info-goto-node with info in erc-button-alist

* lisp/erc/erc-button.el (erc-button-alist): Replace `Info-goto-node'
with plain `info', which is autoloaded.  Expand regexp to recognize
inline `info' function calls.
* lisp/erc/erc-networks.el (erc-networks--set-name,
erc-networks--warn-on-connect): Don't require `info'.  (Bug#60933.)

lisp/erc/erc-button.el

@@ -133,7 +133,7 @@ longer than `erc-fill-column'."
     ("[`‘]\\([a-zA-Z][-a-zA-Z_0-9!*<=>+]+\\)['’]"
      1 t erc-button-describe-symbol 1)
     ;; pseudo links
-    ("\\bInfo:[\"]\\([^\"]+\\)[\"]" 0 t Info-goto-node 1)
+    ("\\(?:\\bInfo: ?\\|(info \\)[\"]\\(([^\"]+\\)[\"])?" 0 t info 1)
     ("\\b\\(Ward\\|Wiki\\|WardsWiki\\|TheWiki\\):\\([A-Z][a-z]+\\([A-Z][a-z]+\\)+\\)"
      0 t (lambda (page)
            (browse-url (concat "http://c2.com/cgi-bin/wiki?" page)))

lisp/erc/erc-networks.el

@@ -1292,7 +1292,6 @@ shutting down the connection."
                      erc-server-announced-name "\" in `erc-networks-alist'"
                      " or consider calling `erc-tls' with the keyword `:id'."
                      "  See Info:\"(erc) Network Identifier\" for more.")))
-     (require 'info)
      (erc-display-error-notice parsed m)
      (if erc-networks--allow-unknown-network
          (progn
@@ -1514,7 +1513,6 @@ to be a false alarm.  If `erc-reuse-buffers' is nil, let
   "Emit warning when the `networks' module hasn't been loaded.
 Ideally, do so upon opening the network process."
   (unless (or erc--target erc-networks-mode)
-    (require 'info nil t)
     (let ((m (concat "Required module `networks' not loaded.  If this "
                      " was unexpected, please add it to `erc-modules'.")))
       ;; Assume the server buffer has been marked as active.