Remove unused Data::Dumper from cmake exporter #6

Job	Run time
run-checker (no-cmp)	4m 58s
run-checker (no-cms)	5m 13s
run-checker (no-dgram)	4m 48s
run-checker (no-dh)	4m 59s
run-checker (no-dtls)	5m 16s
run-checker (no-ec)	4m 31s
run-checker (no-ecx)	5m 19s
run-checker (no-http)	5m 6s
run-checker (no-legacy)	5m 11s
run-checker (no-sock)	4m 32s
run-checker (enable-ssl-trace)	5m 27s
run-checker (no-stdio)	2m 10s
run-checker (no-threads)	4m 58s
run-checker (no-thread-pool)	5m 8s
run-checker (no-default-thread-pool)	5m 15s
run-checker (no-tls)	4m 30s
run-checker (no-tls1_2)	5m 1s
run-checker (no-tls1_3)	4m 48s
run-checker (enable-trace enable-fips)	6m 1s
run-checker (no-ui)	5m 7s
run-checker (no-quic)	4m 49s
	1h 43m 7s

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