⚰️ remove obsolete US Mail V2 #149

Job	Run time
static_analysis / Check Code Style	22s
build / Build (11, temurin)	56s
build / Build (8, temurin)	1m 33s
test_integrations / Run Integration Tests (11, temurin)	1m 23s
codeql / Analyze (java)	2m 4s
test_integrations / Run Integration Tests (8, temurin)	1m 31s
test_code_samples / Test Code Samples (21, temurin)	3m 0s
test_code_samples / Test Code Samples (17, temurin)	2m 56s
test_code_samples / Test Code Samples (8, temurin)	2m 56s
test_code_samples / Test Code Samples (11, temurin)	2m 58s
	19m 39s

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