Revert "glib2: update to 2.64.2"

It is not ready and there are some issues described in
https://github.com/openwrt/packages/pull/11442

This reverts commit b465ac3002.

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

libs/glib2/patches/001-no-libelf.patch

@@ -1,23 +0,0 @@
---- a/gio/meson.build
-+++ b/gio/meson.build
-@@ -870,20 +870,6 @@ endif
- 
- # Dependencies used by executables below
- have_libelf = false
--libelf = dependency('libelf', version : '>= 0.8.12', required : false)
--if libelf.found()
--  have_libelf = true
--else
--  # This fallback is necessary on *BSD. elfutils isn't the only libelf
--  # implementation, and *BSD usually includes their own libelf as a system
--  # library which doesn't have a corresponding .pc file.
--  libelf = cc.find_library('elf', required : false)
--  have_libelf = libelf.found()
--  have_libelf = have_libelf and cc.has_function('elf_begin', dependencies : libelf)
--  have_libelf = have_libelf and cc.has_function('elf_getshdrstrndx', dependencies : libelf)
--  have_libelf = have_libelf and cc.has_function('elf_getshdrnum', dependencies : libelf)
--  have_libelf = have_libelf and cc.has_header('libelf.h')
--endif
- 
- if have_libelf
-   glib_conf.set('HAVE_LIBELF', 1)