python3-pydantic: drop recipe

[shr-project]

There is 2.12.0 version in meta-python, this 2.5.3 is too old to build python3-lief

It was added to meta-ros2 in 977a039 but it's not
clear from the commit message if it needed this old version or can use newer from
meta-python.

meta-openembedded $ git log --oneline --follow 1872badd73.. -- ./meta-python/recipes-devtools/python/python3-pydantic_2.12.0.bb
317da0fe97 pydantic: Upgrade 2.11.7 -> 2.12.0
10385d468e python3-pydantic: Upgrade to v2.12.0a1 prerelease
64c46bbb72 python3-pydantic: Upgrade to 2.11.7
fc78d37ff0 meta-openembedded/all: adapt to UNPACKDIR changes
c7073b4679 python3-pydantic: Use tip of trunk
467110cf48 python3-pydantic: Enable riscv32 builds
42ef8220af python3-pydantic: Upgrade 2.11.2 -> 2.11.3
6a3128f17b pydantic: Mark host incompatible on RISCV32
ed91d5280b python3-pydantic: Upgrade to 2.11.2
c86c9fa882 python3-pydantic: Add dependency on typing-inspection
2ce7725d8e python3-pydantic: Upgrade to 2.11.1 release
2acc4af5d0 python3-pydantic: Upgrade 2.10.5 -> 2.10.6
ac3524962d python3-pydantic: Add native and nativesdk
645907c41a python3-pydantic: update recipe to use the ptest-python-pytest class
5df0940c6e python3-pydantic: Upgrade 2.10.4 -> 2.10.5
5b8fc10f86 python3-pydantic: Upgrade 2.10.2 -> 2.10.4
7d22a7b191 python3-pydantic: Upgrade 2.9.2 -> 2.10.2
8761bbf17d python3-pydantic: Add missing rdeps
8ca014a96d python3-pydantic: Upgrade to 2.9.2
110b636836 python3-pydantic: upgrade 2.7.3 -> 2.8.2
a45050c643 python3-pydantic: Upgrade to 2.7.2
6112eb064c python3-pydantic: upgrade 2.7.0 -> 2.7.1
e8869a25d0 python3-pydantic: upgrade 2.6.4 -> 2.7.0
66cc4b3a34 python3-pydantic: Ignore failing testcases
359d764863 python3-pydantic: upgrade 2.6.3 -> 2.6.4
ce96ca0dac python3-pydantic-core,python3-pydantic: Update to 2.16.3 and 2.6.3 respectively
33236c4c1b python3-pydantic: upgrade 2.5.3 -> 2.6.0
d9ace19a21 python3-pydantic: upgrade 2.5.2 -> 2.5.3