Revert/cleanup network timeout executor creation/shutdown.
Revert/cleanup network timeout executor creation/shutdown.

ams2990/HikariCP,barrysun/HikariCP,udayshnk/HikariCP,hito-asa/HikariCP,atschx/HikariCP,squidsolutions/HikariCP,zhuyihao/HikariCP,Violantic/HikariCP,brettwooldridge/HikariCP,junlapong/HikariCP,ligzy/HikariCP,nitincchauhan/HikariCP,785468931/HikariCP,polpot78/HikariCP,mwegrz/HikariCP,yaojuncn/HikariCP,brettwooldridge/HikariCP,openbouquet/HikariCP,sridhar-newsdistill/HikariCP,kschmit90/HikariCP,schlosna/HikariCP