Remove OS(QNX) support.

Source/wtf/NumberOfCores.cpp

Index: Source/wtf/NumberOfCores.cpp
diff --git a/Source/wtf/NumberOfCores.cpp b/Source/wtf/NumberOfCores.cpp
index 4bbdb942f1fffdb5361fc9cc226240b251a49b81..72a51314c7bf674a5ef7716d8e058e88c2437c65 100644
--- a/Source/wtf/NumberOfCores.cpp
+++ b/Source/wtf/NumberOfCores.cpp
@@ -34,12 +34,10 @@
 #include <sys/sysctl.h>
 #elif OS(LINUX) || OS(AIX) || OS(SOLARIS)
 #include <unistd.h>
-#elif OS(WINDOWS) || OS(QNX)
+#elif OS(WINDOWS)
 #include <wtf/UnusedParam.h>
 #if OS(WINDOWS)
 #include <windows.h>
-#elif OS(QNX)
-#include <sys/syspage.h>
 #endif
 #endif
 
@@ -73,10 +71,6 @@ int numberOfProcessorCores()
     GetSystemInfo(&sysInfo);
 
     s_numberOfCores = sysInfo.dwNumberOfProcessors;
-#elif OS(QNX)
-    UNUSED_PARAM(defaultIfUnavailable);
-
-    s_numberOfCores = _syspage_ptr->num_cpu;
 #else
     s_numberOfCores = defaultIfUnavailable;
 #endif