GEODE-778: Remove grgit plugin to avoid build failures
GEODE-778: Remove grgit plugin to avoid build failures

Applying the grgit plugin in a non-git working tree was causing
build failures.  Removing the plugin restores the correct
behavior.

shankarh/geode,deepakddixit/incubator-geode,smanvi-pivotal/geode,smgoller/geode,prasi-in/geode,prasi-in/geode,smgoller/geode,jdeppe-pivotal/geode,davinash/geode,davebarnes97/geode,charliemblack/geode,davinash/geode,masaki-yamakawa/geode,masaki-yamakawa/geode,masaki-yamakawa/geode,prasi-in/geode,jdeppe-pivotal/geode,deepakddixit/incubator-geode,masaki-yamakawa/geode,shankarh/geode,deepakddixit/incubator-geode,masaki-yamakawa/geode,davebarnes97/geode,smanvi-pivotal/geode,davebarnes97/geode,pivotal-amurmann/geode,pdxrunner/geode,smanvi-pivotal/geode,smanvi-pivotal/geode,charliemblack/geode,charliemblack/geode,PurelyApplied/geode,davebarnes97/geode,smgoller/geode,jdeppe-pivotal/geode,pdxrunner/geode,smanvi-pivotal/geode,davinash/geode,jdeppe-pivotal/geode,davinash/geode,charliemblack/geode,deepakddixit/incubator-geode,davinash/geode,masaki-yamakawa/geode,pdxrunner/geode,smgoller/geode,shankarh/geode,prasi-in/geode,PurelyApplied/geode,davebarnes97/geode,pivotal-amurmann/geode,prasi-in/geode,davinash/geode,PurelyApplied/geode,pivotal-amurmann/geode,pdxrunner/geode,smgoller/geode,jdeppe-pivotal/geode,charliemblack/geode,deepakddixit/incubator-geode,smgoller/geode,PurelyApplied/geode,jdeppe-pivotal/geode,pdxrunner/geode,PurelyApplied/geode,PurelyApplied/geode,pivotal-amurmann/geode,jdeppe-pivotal/geode,pdxrunner/geode,PurelyApplied/geode,davebarnes97/geode,deepakddixit/incubator-geode,deepakddixit/incubator-geode,smgoller/geode,pivotal-amurmann/geode,davebarnes97/geode,davinash/geode,masaki-yamakawa/geode,shankarh/geode,pdxrunner/geode,shankarh/geode