Merge bitcoin#20650: depends: Drop workaround for a fixed bug in Qt build system

267f259 depends: Drop workaround for a fixed bug in Qt build system (Hennadii Stepanov)

Pull request description:

  This PR drops workaround that was [introduced](bitcoin@1dec09b) for Qt 5.2.1 for a bug in Qt build system that has been fixed in Qt 5.3.0.

  The bug reports:
   - https://bugreports.qt.io/browse/QTBUG-35444
   - https://bugreports.qt.io/browse/QTBUG-32519

  I've noted this change is a part of the bitcoin#19716, but I think that a separate commit with the documented reason will benefit it.

ACKs for top commit:
  laanwj:
    Code review ACK 267f259
  jonasschnelli:
    code Review ACK 267f259
  practicalswift:
    cr ACK 267f259: patch looks correct

Tree-SHA512: b994f94776b4f8bb2f996095c87c7fef55e74d1e64852a890d664275e3739ec890ee388b10baa15445dd24ec7b971ce57d396cb062dbed933c18b6b69525349f

Author: jonasschnelli

depends/packages/qt.mk

@@ -180,10 +180,7 @@ define $(package)_stage_cmds
   $(MAKE) -C src INSTALL_ROOT=$($(package)_staging_dir) $(addsuffix -install_subtargets,$(addprefix sub-,$($(package)_qt_libs))) && cd .. && \
   $(MAKE) -C qttools/src/linguist/lrelease INSTALL_ROOT=$($(package)_staging_dir) install_target && \
   $(MAKE) -C qttools/src/linguist/lupdate INSTALL_ROOT=$($(package)_staging_dir) install_target && \
-  $(MAKE) -C qttranslations INSTALL_ROOT=$($(package)_staging_dir) install_subtargets && \
-  if `test -f qtbase/src/plugins/platforms/xcb/xcb-static/libxcb-static.a`; then \
-    cp qtbase/src/plugins/platforms/xcb/xcb-static/libxcb-static.a $($(package)_staging_prefix_dir)/lib; \
-  fi
+  $(MAKE) -C qttranslations INSTALL_ROOT=$($(package)_staging_dir) install_subtargets
 endef
 
 define $(package)_postprocess_cmds