Merge bitcoin/bitcoin#33217: depends: remove xinerama extension from libxcb

decc367 guix: remove libxcb-xinerama.so.0 from allowed libs (fanquake)
3d9314f depends: remove xinerama extension from libxcb (fanquake)

Pull request description:

  This is listed on https://doc.qt.io/qt-5.15/linux-requirements.html as "recommended", and doesn't seem to be needed (only used for windowing over multiple screens support?) , and the fact that it's no-longer installed by default on modern linux distros (i.e Ubuntu), is annoying/confusing for users. See:

  bitcoin/bitcoin#30061
  bitcoin/bitcoin#32097
  bitcoin/bitcoin#33197
  https://bitcoin.stackexchange.com/questions/122646/libxcb-xinerama0-library-required-by-bitcoin-qt

  I haven't tested the GUI with these changes. Just opening an alternative to #33197. Note that we also already have `libxcb-cursor0` documented as a potentially missing runtime dependency (see `build-unix.md`).

ACKs for top commit:
  hebasto:
    ACK decc367.

Tree-SHA512: 4131e665a0c48a866d2a6d1d3909a19481c20cf69c19ab14de63b379f73bff5151759b63504857f5ed2e01f58b895def1b7db532323ecc353fcd11493aa45c90

Author: fanquake

contrib/guix/symbol-check.py

@@ -123,7 +123,6 @@
 'libxcb-shape.so.0',
 'libxcb-sync.so.1',
 'libxcb-xfixes.so.0',
-'libxcb-xinerama.so.0',
 'libxcb-xkb.so.1',
 }
 

depends/packages/libxcb.mk

@@ -16,7 +16,7 @@ $(package)_config_opts += --disable-dri2 --disable-dri3 --disable-glx
 $(package)_config_opts += --disable-present --disable-record --disable-resource
 $(package)_config_opts += --disable-screensaver --disable-xevie --disable-xfree86-dri
 $(package)_config_opts += --disable-xinput --disable-xprint --disable-selinux
-$(package)_config_opts += --disable-xtest --disable-xv --disable-xvmc
+$(package)_config_opts += --disable-xtest --disable-xv --disable-xvmc --disable-xinerama
 endef
 
 define $(package)_preprocess_cmds