Remove the QT_CMAKE_BUILD preprocessor define

Qt is now always built with CMake.

The "cmake" keyword for QtTest blacklists remains for now. Removal is
tracked in QTBUG-90545.

Change-Id: I0011d56176a07c82698b2eb9aa330e77efa6cd34
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>

src/testlib/CMakeLists.txt

@@ -132,7 +132,4 @@ qt_internal_add_docs(Test
 
 # special case begin
 qt_internal_apply_testlib_coverage_options(Test)
-
-# Allow blacklisting tests depending on whether testlib was built as part of a CMake build.
-target_compile_definitions(Test PRIVATE QT_CMAKE_BUILD)
 # special case end

src/testlib/qtestblacklist.cpp

@@ -184,9 +184,7 @@ static QSet<QByteArray> keywords()
             << "developer-build"
 #endif
 
-#ifdef QT_CMAKE_BUILD
             << "cmake"
-#endif
             ;
 
 #if QT_CONFIG(properties)

tests/auto/corelib/global/qlogging/CMakeLists.txt

@@ -22,8 +22,6 @@ qt_internal_add_test(tst_qlogging SOURCES tst_qlogging.cpp
         HELPER_BINARY="${CMAKE_CURRENT_BINARY_DIR}/qlogging_helper"
 )
 
-target_compile_definitions(tst_qlogging PRIVATE QT_CMAKE_BUILD) # to fix the binary name
-
 qt_internal_add_test(tst_qmessagelogger SOURCES tst_qmessagelogger.cpp
     DEFINES
         QT_MESSAGELOGCONTEXT

tests/auto/corelib/global/qlogging/tst_qlogging.cpp

@@ -737,11 +737,7 @@ void tst_qmessagehandler::qMessagePattern_data()
     QTest::newRow("time-process") << "<%{time process}>%{message}" << true << (QList<QByteArray>()
             << "<     ");
 
-#ifdef QT_CMAKE_BUILD
 #define BACKTRACE_HELPER_NAME "qlogging_helper"
-#else
-#define BACKTRACE_HELPER_NAME "helper"
-#endif
 
 #ifdef __GLIBC__
 #ifdef QT_NAMESPACE