Remove unused QCall for WinRTSupported (#44278)

Author: elinor-fung

src/coreclr/src/classlibnative/bcltype/system.cpp

@@ -590,23 +590,6 @@ FCIMPL0(FC_BOOL_RET, SystemNative::IsServerGC)
 }
 FCIMPLEND
 
-#ifdef FEATURE_COMINTEROP
-
-BOOL QCALLTYPE SystemNative::WinRTSupported()
-{
-    QCALL_CONTRACT;
-
-    BOOL hasWinRT = FALSE;
-
-    BEGIN_QCALL;
-    hasWinRT = ::WinRTSupported();
-    END_QCALL;
-
-    return hasWinRT;
-}
-
-#endif // FEATURE_COMINTEROP
-
 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 
 void QCALLTYPE SystemNative::X86BaseCpuId(int cpuInfo[4], int functionId, int subFunctionId)

src/coreclr/src/classlibnative/bcltype/system.h

@@ -73,11 +73,6 @@ class SystemNative
 
     static FCDECL0(FC_BOOL_RET, IsServerGC);
 
-#ifdef FEATURE_COMINTEROP
-    static
-    BOOL QCALLTYPE WinRTSupported();
-#endif // FEATURE_COMINTEROP
-
     // Return a method info for the method were the exception was thrown
     static FCDECL1(ReflectMethodObject*, GetMethodFromStackTrace, ArrayBase* pStackTraceUNSAFE);
 

src/coreclr/src/vm/ecalllist.h

@@ -164,9 +164,6 @@ FCFuncStart(gEnvironmentFuncs)
     QCFuncElement("GetProcessorCount", SystemNative::GetProcessorCount)
     FCFuncElement("GetCommandLineArgsNative", SystemNative::GetCommandLineArgs)
 
-#if defined(FEATURE_COMINTEROP)
-    QCFuncElement("WinRTSupported", SystemNative::WinRTSupported)
-#endif // FEATURE_COMINTEROP
     FCFuncElementSig("FailFast", &gsig_SM_Str_RetVoid, SystemNative::FailFast)
     FCFuncElementSig("FailFast", &gsig_SM_Str_Exception_RetVoid, SystemNative::FailFastWithException)
     FCFuncElementSig("FailFast", &gsig_SM_Str_Exception_Str_RetVoid, SystemNative::FailFastWithExceptionAndSource)