⚰️ remove obsolete US Mail V2 (#361) #74

Job	Run time
static-analysis / Run Static Analysis (3.11)	1m 13s
test_units / Run Unit Tests (ubuntu-22.04, 3.11)	37s
test_units / Run Unit Tests (ubuntu-22.04, 3.8)	36s
test_units / Run Unit Tests (ubuntu-22.04, 3.10)	32s
test_units / Run Unit Tests (ubuntu-22.04, 3.13)	35s
test_units / Run Unit Tests (ubuntu-22.04, 3.9)	45s
test_units / Run Unit Tests (windows-2022, 3.8)	1m 28s
test_units / Run Unit Tests (windows-2022, 3.11)	56s
test_units / Run Unit Tests (windows-2022, 3.12)	54s
test_units / Run Unit Tests (ubuntu-22.04, 3.12)	29s
test_units / Run Unit Tests (windows-2022, 3.9)	52s
test_units / Run Unit Tests (windows-2022, 3.13)	1m 4s
test_units / Run Unit Tests (windows-2022, 3.10)	2m 6s
tag / tag-version	0s
release	0s
	12m 7s

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