remove unused

textgrad/engine/engine_utils.py

@@ -0,0 +1,16 @@
+def is_jpeg(data):
+    jpeg_signature = b'\xFF\xD8\xFF'
+    return data.startswith(jpeg_signature)
+
+def is_png(data):
+    png_signature = b'\x89\x50\x4E\x47\x0D\x0A\x1A\x0A'
+    return data.startswith(png_signature)
+
+
+def get_image_type_from_bytes(data):
+    if is_jpeg(data):
+        return "jpeg"
+    elif is_png(data):
+        return "png"
+    else:
+        raise ValueError("Image type not supported, only jpeg and png supported.")