ngage: Remove Nokia N-Gage support.

This can be reverted if a toolchain arrives that can handle C99 features like
variables declared in the middle of a scope, but for now we literally can't
compile SDL3 for this platform.

Fixes #11243.

src/main/ngage/SDL_sysmain_runapp.cpp

@@ -1,77 +0,0 @@
-/*
-   based on SDL_ngage_main.c, originally for SDL 1.2 by Hannu Viitala
-*/
-
-#include "SDL_internal.h"
-
-#ifdef SDL_PLATFORM_NGAGE
-
-#include <e32std.h>
-#include <e32def.h>
-#include <e32svr.h>
-#include <e32base.h>
-#include <estlib.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <w32std.h>
-#include <apgtask.h>
-
-
-int SDL_RunApp(int argc_, char* argv_[], SDL_main_func mainFunction, void * reserved)
-{
-    (void)argc_; (void)argv_; (void)reserved;
-    // Get the clean-up stack
-    CTrapCleanup *cleanup = CTrapCleanup::New();
-
-    // Arrange for multi-threaded operation
-    SpawnPosixServerThread();
-
-    // Get args and environment
-    int argc = 0;
-    char **argv = 0;
-    char **envp = 0;
-
-    __crt0(argc, argv, envp);
-
-    // Start the application!
-
-    // Create stdlib
-    _REENT;
-
-    // Set process and thread priority and name
-
-    RThread currentThread;
-    RProcess thisProcess;
-    TParse exeName;
-    exeName.Set(thisProcess.FileName(), NULL, NULL);
-    currentThread.Rename(exeName.Name());
-    currentThread.SetProcessPriority(EPriorityLow);
-    currentThread.SetPriority(EPriorityMuchLess);
-
-    // Increase heap size
-    RHeap *newHeap = NULL;
-    RHeap *oldHeap = NULL;
-    TInt heapSize = 7500000;
-    int ret;
-
-    newHeap = User::ChunkHeap(NULL, heapSize, heapSize, KMinHeapGrowBy);
-
-    if (!newHeap) {
-        ret = 3;
-        goto cleanup;
-    } else {
-        oldHeap = User::SwitchHeap(newHeap);
-        // Call stdlib main
-        SDL_SetMainReady();
-        ret = mainFunction(argc, argv);
-    }
-
-cleanup:
-    _cleanup();
-
-    CloseSTDLIB();
-    delete cleanup;
-    return ret;
-}
-
-#endif // SDL_PLATFORM_NGAGE