Fixed extra data about drill marks in gerber files.

We must use SetDrillMarksType(0) for gerbers.

CHANGELOG.md

@@ -18,6 +18,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   This status was moved to a separated column named `Status`.
   You can join both columns if you want.
 
+### Fixed
+- Extra data about drill marks in gerber files.
+
 
 ## [0.9.0] - 2021-01-04
 ### Added

kibot/out_gerber.py

@@ -59,6 +59,7 @@ class GerberOptions(AnyLayerOptions):
         po.SetUseGerberX2format(self.use_gerber_x2_attributes)
         po.SetIncludeGerberNetlistInfo(self.use_gerber_net_attributes)
         po.SetUseAuxOrigin(self.use_aux_axis_as_origin)
+        po.SetDrillMarksType(0)
         if GS.kicad_version_n < KICAD_VERSION_5_99:
             po.SetLineWidth(FromMM(self.line_width))
         else: