removing unnessesary store entry

...cripts/monitoring-location/components/hydrograph/index.js

...s/monitoring-location/components/hydrograph/index.test.js

...s/monitoring-location/components/hydrograph/parameters.js

...itoring-location/components/hydrograph/parameters.test.js

...onitoring-location/selectors/hydrograph-state-selector.js

...ring-location/selectors/hydrograph-state-selector.test.js

.../src/scripts/monitoring-location/store/hydrograph-data.js

...scripts/monitoring-location/store/hydrograph-data.test.js

...src/scripts/monitoring-location/store/hydrograph-state.js

...cripts/monitoring-location/store/hydrograph-state.test.js