Cleanup: Remove useless duplicated lines

I spotted a duplicate struct declaration, so I had to check for other duplicated as well
There might be some other but i am not confident enough for deleting them

this regex search for duplicate ^(.*;)$\n(\1)$

Reviewed By: JacquesLucke

Differential Revision: https://developer.blender.org/D8146

source/blender/blenkernel/BKE_paint.h

@@ -57,7 +57,6 @@ struct ReportList;
 struct Scene;
 struct StrokeCache;
 struct SubdivCCG;
-struct SubdivCCG;
 struct Tex;
 struct ToolSettings;
 struct UnifiedPaintSettings;

source/blender/blenkernel/BKE_particle.h

@@ -48,7 +48,6 @@ struct BVHTreeRay;
 struct BVHTreeRayHit;
 struct CustomData_MeshMasks;
 struct Depsgraph;
-struct Depsgraph;
 struct EdgeHash;
 struct KDTree_3d;
 struct LatticeDeformData;

source/blender/blenkernel/BKE_subsurf.h

@@ -45,7 +45,6 @@ struct Mesh;
 struct MeshElemMap;
 struct Object;
 struct PBVH;
-struct PBVH;
 struct SubsurfModifierData;
 
 /**************************** External *****************************/

source/blender/editors/include/ED_armature.h

@@ -34,7 +34,6 @@ struct Depsgraph;
 struct IDProperty;
 struct ListBase;
 struct Main;
-struct Main;
 struct Mesh;
 struct MeshDeformModifierData;
 struct Object;

source/blender/editors/include/ED_mesh.h

@@ -47,8 +47,6 @@ struct ReportList;
 struct Scene;
 struct UndoType;
 struct UvMapVert;
-struct UvMapVert;
-struct UvVertMap;
 struct UvVertMap;
 struct View3D;
 struct ViewContext;

source/blender/editors/include/ED_node.h

@@ -31,7 +31,6 @@ extern "C" {
 struct ID;
 struct Main;
 struct Scene;
-struct Scene;
 struct ScrArea;
 struct Tex;
 struct View2D;
@@ -40,7 +39,6 @@ struct bNode;
 struct bNodeSocket;
 struct bNodeSocketType;
 struct bNodeTree;
-struct bNodeTree;
 struct bNodeTreeType;
 struct bNodeType;
 

source/blender/editors/include/ED_object.h

@@ -34,7 +34,6 @@ extern "C" {
 struct Base;
 struct Depsgraph;
 struct EnumPropertyItem;
-struct EnumPropertyItem;
 struct ID;
 struct Main;
 struct ModifierData;

source/blender/editors/include/UI_interface.h

@@ -65,7 +65,6 @@ struct uiWidgetColors;
 struct wmDrag;
 struct wmDropBox;
 struct wmEvent;
-struct wmEvent;
 struct wmGizmo;
 struct wmKeyConfig;
 struct wmKeyMap;

source/blender/makesrna/intern/rna_tracking.c

@@ -1036,7 +1036,6 @@ static void rna_def_trackingSettings(BlenderRNA *brna)
   /* default_tracking_motion_model */
   prop = RNA_def_property(srna, "default_motion_model", PROP_ENUM, PROP_NONE);
   RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
-  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
   RNA_def_property_enum_items(prop, tracker_motion_model);
   RNA_def_property_ui_text(prop, "Motion Model", "Default motion model to use for tracking");
 
@@ -1070,7 +1069,6 @@ static void rna_def_trackingSettings(BlenderRNA *brna)
   /* default minimal correlation */
   prop = RNA_def_property(srna, "default_correlation_min", PROP_FLOAT, PROP_NONE);
   RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
-  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
   RNA_def_property_float_sdna(prop, NULL, "default_minimum_correlation");
   RNA_def_property_range(prop, 0.0f, 1.0f);
   RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.05, 3);
@@ -1203,7 +1201,6 @@ static void rna_def_trackingCamera(BlenderRNA *brna)
   prop = RNA_def_property(srna, "units", PROP_ENUM, PROP_NONE);
   RNA_def_property_enum_sdna(prop, NULL, "units");
   RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
-  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
   RNA_def_property_enum_items(prop, camera_units_items);
   RNA_def_property_ui_text(prop, "Units", "Units used for camera focal length");