Removed duplicated line (thanks @sechshelme!)

Fixes https://github.com/libsdl-org/SDL/issues/9264

include/SDL3/SDL_render.h

@@ -661,7 +661,6 @@ extern DECLSPEC SDL_Texture *SDLCALL SDL_CreateTextureWithProperties(SDL_Rendere
 #define SDL_PROP_TEXTURE_CREATE_OPENGL_TEXTURE_U_NUMBER     "opengl.texture_u"
 #define SDL_PROP_TEXTURE_CREATE_OPENGL_TEXTURE_V_NUMBER     "opengl.texture_v"
 #define SDL_PROP_TEXTURE_CREATE_OPENGLES2_TEXTURE_NUMBER    "opengles2.texture"
-#define SDL_PROP_TEXTURE_CREATE_OPENGLES2_TEXTURE_NUMBER    "opengles2.texture"
 #define SDL_PROP_TEXTURE_CREATE_OPENGLES2_TEXTURE_UV_NUMBER "opengles2.texture_uv"
 #define SDL_PROP_TEXTURE_CREATE_OPENGLES2_TEXTURE_U_NUMBER  "opengles2.texture_u"
 #define SDL_PROP_TEXTURE_CREATE_OPENGLES2_TEXTURE_V_NUMBER  "opengles2.texture_v"