build-system/meson: Do not inherit the 'bootstrap' phase.

* guix/build/meson-build-system.scm (%standard-phases): Remove 'bootstrap'.
* gnu/packages/glib.scm (glib)[arguments]: Adjust accordingly.

gnu/packages/glib.scm

@@ -200,7 +200,6 @@ shared NFS home directories.")
    (arguments
     `(#:phases
       (modify-phases %standard-phases
-        (delete 'bootstrap)
         (add-before 'build 'pre-build
           (lambda* (#:key inputs outputs #:allow-other-keys)
             ;; For tests/gdatetime.c.

guix/build/meson-build-system.scm

@@ -108,6 +108,7 @@ for example libraries only needed for the tests."
   ;; from the gnu-build-system.  If the glib-or-gtk? key is #f (the default)
   ;; then the extra phases will be removed again in (guix build-system meson).
   (modify-phases glib-or-gtk:%standard-phases
+    (delete 'bootstrap)
     (replace 'configure configure)
     (replace 'build build)
     (replace 'check check)