WARNING: BREAKING: REMOVED: GenImagePerlinNoise()

raylib was using `stb_perlin.h` library to generate perlin noise, it seems that recently this library has been flagged as it could be infringing some algorythm patent. For security, it has been removed from raylib.

src/raylib.h

@@ -1215,7 +1215,6 @@ RLAPI Image GenImageGradientH(int width, int height, Color left, Color right);
 RLAPI Image GenImageGradientRadial(int width, int height, float density, Color inner, Color outer);      // Generate image: radial gradient
 RLAPI Image GenImageChecked(int width, int height, int checksX, int checksY, Color col1, Color col2);    // Generate image: checked
 RLAPI Image GenImageWhiteNoise(int width, int height, float factor);                                     // Generate image: white noise
-RLAPI Image GenImagePerlinNoise(int width, int height, int offsetX, int offsetY, float scale);           // Generate image: perlin noise
 RLAPI Image GenImageCellular(int width, int height, int tileSize);                                       // Generate image: cellular algorithm, bigger tileSize means bigger cells
 
 // Image manipulation functions