revert: Fix build on Mojave (10.14.6)

This reverts commit 489770a.

Author: kwvg

depends/packages/qt.mk

@@ -251,7 +251,6 @@ define $(package)_preprocess_cmds
   echo "!host_build: QMAKE_LFLAGS     += $($(package)_ldflags)" >> qtbase/mkspecs/common/gcc-base.conf && \
   sed -i.old "s|QMAKE_CC                = \$$$$\$$$${CROSS_COMPILE}clang|QMAKE_CC                = $($(package)_cc)|" qtbase/mkspecs/common/clang.conf && \
   sed -i.old "s|QMAKE_CXX               = \$$$$\$$$${CROSS_COMPILE}clang++|QMAKE_CXX               = $($(package)_cxx)|" qtbase/mkspecs/common/clang.conf && \
-  sed -i.old "s/error(\"failed to parse default search paths from compiler output\")/\!darwin: error(\"failed to parse default search paths from compiler output\")/g" qtbase/mkspecs/features/toolchain.prf && \
   sed -i.old "s/LIBRARY_PATH/(CROSS_)?\0/g" qtbase/mkspecs/features/toolchain.prf
 endef