arrow: drop outdated and unused recipe. (#11928)

`git log --since=2023-08 -S 'arrow_\$'` or `git log --since=2023-08 -S arrow_py`
do not show any usage of this on-tree since it was introduced in
1a145f36ae.

Users should try to `pip install` this, if they need it.

dev-python/arrow/arrow-1.2.3.recipe

@@ -1,73 +0,0 @@
-SUMMARY="Better dates & times for Python"
-DESCRIPTION="Arrow is a Python library that offers a sensible and human-friendly approach to \
-creating, manipulating, formatting and converting dates, times and timestamps. It implements and \
-updates the datetime type, plugging gaps in functionality and providing an intelligent module API \
-that supports many common creation scenarios. Simply put, it helps you work with dates and times \
-with fewer imports and a lot less code.
-
-Arrow is named after the arrow of time and is heavily inspired by moment.js and requests."
-HOMEPAGE="https://github.com/arrow-py/arrow/"
-COPYRIGHT="2023 Chris Smith"
-LICENSE="Apache v2"
-REVISION="1"
-SOURCE_URI="https://github.com/arrow-py/arrow/archive/$portVersion.tar.gz"
-CHECKSUM_SHA256="dc77c3f46354a2d7fd840422befdacff1e60ed74538c6eed4796e6e58883983c"
-
-ARCHITECTURES="any"
-
-PROVIDES="
-	$portName = $portVersion
-	"
-REQUIRES="
-	haiku
-	"
-
-BUILD_REQUIRES="
-	haiku_devel
-	"
-
-PYTHON_PACKAGES=(python39 python310)
-PYTHON_VERSIONS=(3.9 3.10)
-for i in "${!PYTHON_PACKAGES[@]}"; do
-	pythonPackage=${PYTHON_PACKAGES[i]}
-	pythonVersion=${PYTHON_VERSIONS[$i]}
-
-	eval "PROVIDES_${pythonPackage}=\"
-		${portName}_$pythonPackage = $portVersion
-		\""
-	eval "REQUIRES_$pythonPackage=\"
-		haiku
-		dateutil_$pythonPackage
-		typing_extensions_$pythonPackage
-		cmd:python$pythonVersion
-		\""
-
-	BUILD_REQUIRES="$BUILD_REQUIRES
-		setuptools_$pythonPackage
-		"
-	BUILD_PREREQUIRES="$BUILD_PREREQUIRES
-		cmd:python$pythonVersion
-		"
-done
-
-
-INSTALL()
-{
-	for i in "${!PYTHON_PACKAGES[@]}"; do
-		pythonPackage=${PYTHON_PACKAGES[i]}
-		pythonVersion=${PYTHON_VERSIONS[$i]}
-
-		python=python$pythonVersion
-		installLocation=$prefix/lib/$python/vendor-packages/
-		export PYTHONPATH=$installLocation:$PYTHONPATH
-
-		mkdir -p $installLocation
-		rm -rf build
-
-		$python setup.py build install \
-			--root=/ --prefix=$prefix
-
-		packageEntries  $pythonPackage \
-			$prefix/lib/python*
-	done
-}