Removed redundant part of condition

[radarhere]

Pillow/src/PIL/Image.py

Lines 806 to 815 in aa287bc

	if mode == "RGBA":
	mode = "RGB"
	self.info["transparency"] = arr[3::4]
	arr = bytes(
	value for (index, value) in enumerate(arr) if index % 4 != 3
	)
	palette_length = self.im.putpalette(mode, arr)
	self.palette.dirty = 0
	self.palette.rawmode = None
	if "transparency" in self.info and mode in ("RGBA", "LA", "PA"):

#5914 points out that mode will never be RGBA in the last line.

Unless I'm reading this incorrectly, the addition of the check on mode means that this won't ever evaluate to True, because mode is set back to RGB a few lines above?

Setting RGBA modes to RGB was introduced in #5089.

This PR just removes the check for RGBA in the last line, since it is not needed.