Do not set core to DeferredError

[radarhere]

There's no need to set core in

Pillow/src/PIL/Image.py

Line 106 in 34c651d

core = DeferredError.new(ImportError("The _imaging C module is not installed."))

if we're just going to raise a few lines later, and not use it in between.

Pillow/src/PIL/Image.py

Lines 107 to 120 in 34c651d

	# Explanations for ways that we know we might have an import error
	if str(v).startswith("Module use of python"):
	# The _imaging C module is present, but not compiled for
	# the right version (windows only). Print a warning, if
	# possible.
	warnings.warn(
	"The _imaging extension was built for another version of Python.",
	RuntimeWarning,
	)
	elif str(v).startswith("The _imaging extension"):
	warnings.warn(str(v), RuntimeWarning)
	# Fail here anyway. Don't let people run with a mostly broken Pillow.
	# see docs/porting.rst
	raise