- added a fix so the app close is now clean, with exit code 0 as set

FlatCAMCommon.py

@@ -491,27 +491,3 @@ class ExclusionAreas:
         FlatCAMTool.delete_moving_selection_shape(self)
         self.app.delete_selection_shape()
         FlatCAMTool.delete_tool_selection_shape(self, shapes_storage=self.exclusion_shapes)
-
-
-class InvertHexColor:
-    """
-    Will invert a hex color made out of 3 chars or 6 chars
-    From here: http://code.activestate.com/recipes/527747-invert-css-hex-colors/
-    """
-    def __init__(self):
-        self.p6 = re.compile("#[0-9a-f]{6};", re.IGNORECASE)
-        self.p3 = re.compile("#[0-9a-f]{3};", re.IGNORECASE)
-
-    def modify(self, original_color=3):
-        code = {}
-        l1 = "#;0123456789abcdef"
-        l2 = "#;fedcba9876543210"
-
-        for i in range(len(l1)):
-            code[l1[i]] = l2[i]
-        inverted = ""
-
-        content = p6.sub(modify, content)
-        content = p3.sub(modify, content)
-        return inverted
-