Remove 3.7 release notes #2127

Job	Run time
smoke	3m 24s
mvn clean install - jdk17	13m 11s
gremlin-server default	22m 4s
cache gremlin-server docker image	1m 59s
gremlin-console	6m 7s
gremlin-server unified	21m 58s
mvn clean install - jdk11	18m 15s
mvn clean install - jdk8	13m 37s
spark core (ubuntu-latest)	11m 44s
spark gryo (ubuntu-latest)	9m 45s
spark core (windows-latest)	3m 29s
spark gryo (windows-latest)	4m 17s
neo4j-gremlin	8m 56s
.NET	5m 17s
go	5m 47s
gremlin-driver	3m 48s
javascript (ubuntu-latest)	5m 46s
python	5m 55s
	2h 45m 19s

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