Revert "Fail gracefully if APP->window->loadFont()/loadImage() is called from a ModuleWidget constructor when Window is null."

This reverts commit 9dcb2e66bf.

src/window/Window.cpp

@@ -709,10 +709,6 @@ double Window::getFrameDurationRemaining() {
 
 
 std::shared_ptr<Font> Window::loadFont(const std::string& filename) {
-	// HACK If ModuleWidgets call loadFont() in their constructor, APP->window might be null.
-	if (!this)
-		return NULL;
-
 	const auto& pair = internal->fontCache.find(filename);
 	if (pair != internal->fontCache.end())
 		return pair->second;
@@ -733,10 +729,6 @@ std::shared_ptr<Font> Window::loadFont(const std::string& filename) {
 
 
 std::shared_ptr<Image> Window::loadImage(const std::string& filename) {
-	// HACK If ModuleWidgets call loadFont() in their constructor, APP->window might be null.
-	if (!this)
-		return NULL;
-
 	const auto& pair = internal->imageCache.find(filename);
 	if (pair != internal->imageCache.end())
 		return pair->second;