.gitignore : Remove duplicate `.idea` entry
.gitignore : Remove duplicate `.idea` entry

ImageEngine/gaffer,hradec/gaffer,hradec/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,hradec/gaffer,andrewkaufman/gaffer,appleseedhq/gaffer,johnhaddon/gaffer,hradec/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,boberfly/gaffer,johnhaddon/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,boberfly/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,lucienfostier/gaffer,boberfly/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,boberfly/gaffer,lucienfostier/gaffer,appleseedhq/gaffer,lucienfostier/gaffer,hradec/gaffer,lucienfostier/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer