Revert "Add deterministic tool call ids (#594)" #6470

Job	Run time
build-and-check	3m 21s
test-integration-packages/billing	1m 30s
test-integration-packages/internal	1m 16s
test-packages/billing	38s
test-web	1m 6s
test-packages/internal	50s
test-common	51s
test-.agents	45s
test-packages/agent-runtime	47s
test-cli	1m 3s
test-sdk	42s
test-integration-web	41s
test-integration-cli	40s
test-integration-common	56s
test-integration-packages/agent-runtime	40s
test-integration-sdk	1m 13s
	16m 59s

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