Remove Batch LogRecord&Span Processor configuration via non-standard environment variables #4049

Job	Run time
external-types (opentelemetry)	1m 9s
test (stable)	16m 3s
lint	20m 18s
external-types (opentelemetry-sdk)	1m 18s
test (beta)	17m 1s
cargo-deny	29s
coverage	8m 0s
docs	5m 49s
msrv	3m 45s
non-default-examples (opentelemetry-otlp/examples/external-otlp-grpcio-async-std)	5m 15s
non-default-examples (opentelemetry-otlp/examples/basic-otlp)	54s
	1h 20m 1s

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