build: remove unnecessary macOS qt patching

Patching in kCGMouseButtonLeft should not be required.

Looks like this hasn't been needed since qt 5.5 or so:
https://codereview.qt-project.org/c/qt/qtbase/+/115138

Author: fanquake

depends/packages/qt.mk

@@ -158,7 +158,6 @@ define $(package)_preprocess_cmds
   sed -i.old "s/src_plugins.depends = src_sql src_network/src_plugins.depends = src_network/" qtbase/src/src.pro && \
   sed -i.old "s|X11/extensions/XIproto.h|X11/X.h|" qtbase/src/plugins/platforms/xcb/qxcbxsettings.cpp && \
   sed -i.old -e 's/if \[ "$$$$XPLATFORM_MAC" = "yes" \]; then xspecvals=$$$$(macSDKify/if \[ "$$$$BUILD_ON_MAC" = "yes" \]; then xspecvals=$$$$(macSDKify/' -e 's|/bin/pwd|pwd|' qtbase/configure && \
-  sed -i.old 's/CGEventCreateMouseEvent(0, kCGEventMouseMoved, pos, 0)/CGEventCreateMouseEvent(0, kCGEventMouseMoved, pos, kCGMouseButtonLeft)/' qtbase/src/plugins/platforms/cocoa/qcocoacursor.mm && \
   mkdir -p qtbase/mkspecs/macx-clang-linux &&\
   cp -f qtbase/mkspecs/macx-clang/Info.plist.lib qtbase/mkspecs/macx-clang-linux/ &&\
   cp -f qtbase/mkspecs/macx-clang/Info.plist.app qtbase/mkspecs/macx-clang-linux/ &&\