docs: remove empty section from indicators docs

docs/indicators.md

@@ -13,11 +13,10 @@ Different statistical models are used to find out if saturation is reached.
 
 - Intrinsic approach.
 
-Premise: 
+Premise:
 
 The added number of OSM objects of a specific feature class per time period decreases as the
-number of mapped objects converges against the (un-
-kown) true number of objects. 
+number of mapped objects converges against the (unknown) true number of objects.
 
 Each aggregation of features (e.g. length of roads or count of building)
 has a maximum. After increased mapping activity saturation is reached near this
@@ -36,9 +35,3 @@ maximum.
 - Josephine Brückner, Moritz Schott, Alexander Zipf, and Sven Lautenbach (2021):
     Assessing shop completeness in OpenStreetMap for two federal states in Germany
     /https://doi.org/10.5194/agile-giss-2-20-2021)
-
-### Result
-
-#### Result Classes
-
-#### Thresholds