Remove unused image and clean up infill rotation docs (#54)

Deleted the unused 14+15R.png image and removed extra blank lines from the infill rotation template metalanguage documentation for improved readability.

print_settings/strength/strength_settings_infill_rotation_template_metalanguage.md

@@ -3,7 +3,7 @@
 This metalanguage provides a way to define the [direction and rotation](strength_settings_infill#direction-and-rotation) of [patterns](strength_settings_patterns) in 3D printing.
 
 - [Basic instructions](#basic-instructions)
-  - [Quick examples](#quick-examples)
+- [Quick examples](#quick-examples)
   - [Defined angle](#defined-angle)
   - [Runtime instructions](#runtime-instructions)
   - [Joint sign](#joint-sign)
@@ -37,8 +37,6 @@ This metalanguage provides a way to define the [direction and rotation](strength
 
 `[±]α*` - just setting an initial rotation angle
 
- 
-
 > [!NOTE]
 > `[...]` - values in square brackets are optional
 
@@ -58,8 +56,6 @@ This metalanguage provides a way to define the [direction and rotation](strength
 - `*ℤ` - repeat the instruction ℤ times
 - `!` - the one-time running instruction
 
- 
-
 ### Joint sign
 
 `[joint sign]` - the symbol which determines the method of connection for turning of the infill:
@@ -195,8 +191,6 @@ There are 2 letter signs `T` and `B` that can determine the number of shell laye
 - `B!, +30` - skip the first shell layers from rotation, then fill with 30 degree turn each layer  
 - `+30/1cm, T` - rotate one centimeter of infill linearly at a 30 degree angle, then skip the number of layers equal to the count of the upper shell layers without rotation.  
 
- 
-
 ## Complex template examples
 
 - `+10L25%, -10l25%, -10L25%, +10l25%` - fill the model with sine period with 10 degree amplitude