Removed CMakeLists.txt example that says you shouldn't use it

docs/README-cmake.md

@@ -363,114 +363,3 @@ However, by default CMake builds static libraries as non-relocatable.
 Configuring SDL with `-DCMAKE_POSITION_INDEPENDENT_CODE=ON` will result in a static `libSDL3.a` library
 which you can link against to create a shared library.
 
-## Help, it doesn't work!
-
-Below, a SDL3 CMake project can be found that builds 99.9% of time (assuming you have internet connectivity).
-When you have a problem with building or using SDL, please modify it until it reproduces your issue.
-
-```cmake
-cmake_minimum_required(VERSION 3.16)
-project(sdl_issue)
-
-# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-# !!!!!!                                                                            !!!!!!
-# !!!!!!     This CMake script is not using "CMake best practices".                 !!!!!!
-# !!!!!!                 Don't use it in your project.                              !!!!!!
-# !!!!!!                                                                            !!!!!!
-# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-
-# 1. Try system SDL3 package first
-find_package(SDL3 QUIET)
-if(SDL3_FOUND)
-    message(STATUS "Using SDL3 via find_package")
-endif()
-
-# 2. Try using a vendored SDL library
-if(NOT SDL3_FOUND AND EXISTS "${CMAKE_CURRENT_LIST_DIR}/SDL/CMakeLists.txt")
-    add_subdirectory(SDL EXCLUDE_FROM_ALL)
-    message(STATUS "Using SDL3 via add_subdirectory")
-    set(SDL3_FOUND TRUE)
-endif()
-
-# 3. Download SDL, and use that.
-if(NOT SDL3_FOUND)
-    include(FetchContent)
-    set(SDL_SHARED TRUE CACHE BOOL "Build a SDL shared library (if available)")
-    set(SDL_STATIC TRUE CACHE BOOL "Build a SDL static library (if available)")
-    FetchContent_Declare(
-        SDL
-        GIT_REPOSITORY https://github.com/libsdl-org/SDL.git
-        GIT_TAG main  # Replace this with a particular git tag or git hash
-        GIT_SHALLOW TRUE
-        GIT_PROGRESS TRUE
-    )
-    message(STATUS "Using SDL3 via FetchContent")
-    FetchContent_MakeAvailable(SDL)
-    set_property(DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/_deps/sdl-src" PROPERTY EXCLUDE_FROM_ALL TRUE)
-endif()
-
-file(WRITE main.c [===========================================[
-/**
- * Modify this source such that it reproduces your problem.
- */
-
-/* START of source modifications */
-
-#include <SDL3/SDL.h>
-/*
- * SDL3/SDL_main.h is explicitly not included such that a terminal window would appear on Windows.
- */
-
-int main(int argc, char *argv[]) {
-    (void)argc;
-    (void)argv;
-
-    if (!SDL_Init(SDL_INIT_VIDEO)) {
-        SDL_Log("SDL_Init failed (%s)", SDL_GetError());
-        return 1;
-    }
-
-    SDL_Window *window = NULL;
-    SDL_Renderer *renderer = NULL;
-
-    if (!SDL_CreateWindowAndRenderer("SDL issue", 640, 480, 0, &window, &renderer)) {
-        SDL_Log("SDL_CreateWindowAndRenderer failed (%s)", SDL_GetError());
-        SDL_Quit();
-        return 1;
-    }
-
-    while (1) {
-        int finished = 0;
-        SDL_Event event;
-        while (SDL_PollEvent(&event)) {
-            if (event.type == SDL_EVENT_QUIT) {
-                finished = 1;
-                break;
-            }
-        }
-        if (finished) {
-            break;
-        }
-
-        SDL_SetRenderDrawColor(renderer, 80, 80, 80, SDL_ALPHA_OPAQUE);
-        SDL_RenderClear(renderer);
-        SDL_RenderPresent(renderer);
-    }
-
-    SDL_DestroyRenderer(renderer);
-    SDL_DestroyWindow(window);
-
-    SDL_Quit();
-    return 0;
-}
-
-/* END of source modifications */
-
-]===========================================])
-
-add_executable(sdl_issue main.c)
-
-target_link_libraries(sdl_issue PRIVATE SDL3::SDL3)
-# target_link_libraries(sdl_issue PRIVATE SDL3::SDL3-shared)
-# target_link_libraries(sdl_issue PRIVATE SDL3::SDL3-static)
-```