Cleanup: remove unnecessary comments

source/blender/blenlib/intern/math_rotation.c

@@ -2344,7 +2344,6 @@ BLI_INLINE int _axis_signed(const int axis)
 bool mat3_from_axis_conversion(
     int src_forward, int src_up, int dst_forward, int dst_up, float r_mat[3][3])
 {
-  // from functools import reduce
   int value;
 
   if (src_forward == dst_forward && src_up == dst_up) {

source/blender/blenloader/intern/readfile.c

@@ -5221,9 +5221,6 @@ static void direct_link_area(BlendDataReader *reader, ScrArea *area)
       BLO_read_list(reader, &sconsole->scrollback);
       BLO_read_list(reader, &sconsole->history);
 
-      // for (cl= sconsole->scrollback.first; cl; cl= cl->next)
-      //  cl->line= newdataadr(fd, cl->line);
-
       /* comma expressions, (e.g. expr1, expr2, expr3) evaluate each expression,
        * from left to right.  the right-most expression sets the result of the comma
        * expression as a whole*/

source/blender/makesdna/DNA_brush_types.h

@@ -27,10 +27,6 @@
 #include "DNA_curve_types.h"
 #include "DNA_texture_types.h" /* for MTex */
 
-//#ifndef MAX_MTEX // XXX Not used?
-//#define MAX_MTEX  18
-//#endif
-
 struct CurveMapping;
 struct Image;
 struct MTex;

source/blender/modifiers/intern/MOD_wave.c

@@ -62,7 +62,7 @@
 
 static void initData(ModifierData *md)
 {
-  WaveModifierData *wmd = (WaveModifierData *)md;  // whadya know, moved here from Iraq
+  WaveModifierData *wmd = (WaveModifierData *)md;
 
   BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(wmd, modifier));