gnu: fish: Fix build after upstream changes.

The 2.5.0 release was incorrectly packaged, then fixed in place. This is,
in a way, a follow-up to commit 89eb56f05f.
See <https://github.com/fish-shell/fish-shell/issues/3807>.

Reported by ng0 <contact.ng0@cryptolab.net>.

* gnu/packages/shells.scm (fish)[source]: Update hash.
[native-inputs]: Remove autoconf, automake, and libtool.
[arguments]: Remove ‘bootstrap’ phase.

gnu/packages/shells.scm

@@ -91,7 +91,7 @@ direct descendant of NetBSD's Almquist Shell (@command{ash}).")
                                   version "/fish-" version ".tar.gz"))
               (sha256
                (base32
-                "0kn2n9qr9cksg2cl78f3w0yd24368d35djhi6w5x3gbdxk23ywq3"))
+                "19djav128nkhjxgfhwhc32i5y9d9c3karbh5yg67kqrdranyvh7q"))
               (modules '((guix build utils)))
               ;; Don't try to install /etc/fish/config.fish.
               (snippet
@@ -99,12 +99,7 @@ direct descendant of NetBSD's Almquist Shell (@command{ash}).")
                   ((".*INSTALL.*sysconfdir.*fish.*") "")))))
     (build-system gnu-build-system)
     (native-inputs
-     `(("doxygen" ,doxygen)
-       ;; XXX These are needed to bootstrap the 2.5.0 tarball, and can probably
-       ;; be removed along with the ‘bootstrap’ phase on the next update.
-       ("autoconf" ,autoconf)
-       ("automake" ,automake)
-       ("libtool" ,libtool)))
+     `(("doxygen" ,doxygen)))
     (inputs
      `(("bc" ,bc)
        ("ncurses" ,ncurses)
@@ -125,10 +120,7 @@ direct descendant of NetBSD's Almquist Shell (@command{ash}).")
                                "/bin/bc")))
              (substitute* "share/functions/fish_update_completions.fish"
                (("python") (which "python")))
-             #t))
-         (add-before 'configure 'bootstrap
-           (lambda _
-             (zero? (system* "autoreconf" "-vfi")))))))
+             #t)))))
     (synopsis "The friendly interactive shell")
     (description
      "Fish (friendly interactive shell) is a shell focused on interactive use,