meta-python: fix trailing whitespace

Bitbake now warns about trailing whitespace in parsed metadata lines.
Fix the affected files to silence the warnings during parsing.

Reported on:
https://autobuilder.yoctoproject.org/valkyrie/#/builders/89/builds/4284/steps/15/logs/warnings

Signed-off-by: Jaipaul Cheernam <jaipaul.cheernam@est.tech>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-python/recipes-devtools/python/python3-pint_0.25.3.bb

@@ -20,7 +20,7 @@ RDEPENDS:${PN} += " \
 	python3-packaging \
 	python3-platformdirs \
 "
-# python3-misc for timeit.py 
+# python3-misc for timeit.py
 RDEPENDS:${PN}-ptest += " \
 	python3-appdirs \
 	python3-attrs \