Remove mention of build.sh from README.md #2376

Job	Run time
Consul provider tests (Consul)	5m 27s
Azure Cosmos DB provider tests	0s
Azure Storage provider tests	0s
Build (ubuntu-latest)	2m 15s
Build (windows-latest)	6m 11s
AWS DynamoDB provider tests (DynamoDB)	5m 31s
PostgreSQL provider tests (PostgreSql)	3m 10s
MariaDB/MySQL provider tests (MySql)	4m 16s
Redis provider tests (Redis)	4m 1s
Microsoft SQL Server provider tests (SqlServer)	3m 5s
ZooKeeper provider tests (ZooKeeper)	2m 29s
	36m 25s

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