LMS-764 check that column definitions are GXT/GWT independent: delete forgotten files

...ication/ui/columns/data/CommonExternalDataColDefKind.java

...tion/ui/columns/data/DataSetExperimentPropertyColDef.java

...lication/ui/columns/data/DataSetSamplePropertyColDef.java

...plication/ui/columns/data/DataSetSearchHitColDefKind.java

...ion/ui/columns/experiment/CommonExperimentColDefKind.java

...ation/ui/columns/experiment/PropertyExperimentColDef.java

...ication/ui/columns/sample/AbstractParentSampleColDef.java

...application/ui/columns/sample/CommonSampleColDefKind.java

...cation/ui/columns/sample/ParentContainerSampleColDef.java

...on/ui/columns/sample/ParentGeneratedFromSampleColDef.java

...t/application/ui/columns/sample/PropertySampleColDef.java