deleteTexture method
Implementation
void deleteTexture(WebGLTexture? texture) {
  startCheck("deleteTexture");
  glDeleteTexture(_gl, texture?.id);
  checkError('deleteTexture');
}
void deleteTexture(WebGLTexture? texture) {
  startCheck("deleteTexture");
  glDeleteTexture(_gl, texture?.id);
  checkError('deleteTexture');
}