Remove spaghetti settings from 462 visible_settings when upgrading

Part of CURA-7199

.gitignore

@@ -78,3 +78,5 @@ CuraEngine
 
 #Prevents import failures when plugin running tests
 plugins/__init__.py
+
+/venv

plugins/VersionUpgrade/VersionUpgrade462to47/VersionUpgrade462to47.py

@@ -2,7 +2,7 @@
 # Cura is released under the terms of the LGPLv3 or higher.
 
 import configparser
-from typing import Tuple, List, Dict
+from typing import Tuple, List, Dict, Set
 import io
 from UM.VersionUpgrade import VersionUpgrade
 
@@ -10,8 +10,17 @@ from UM.VersionUpgrade import VersionUpgrade
 # Renamed definition files
 _RENAMED_DEFINITION_DICT = {
     "dagoma_discoeasy200": "dagoma_discoeasy200_bicolor",
-} # type: Dict[str, str]
+}  # type: Dict[str, str]
 
+_removed_settings = {
+    "spaghetti_infill_enabled",
+    "spaghetti_infill_stepped",
+    "spaghetti_max_infill_angle",
+    "spaghetti_max_height",
+    "spaghetti_inset",
+    "spaghetti_flow",
+    "spaghetti_infill_extra_volume"
+}  # type: Set[str]
 
 class VersionUpgrade462to47(VersionUpgrade):
     def upgradePreferences(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
@@ -28,6 +37,11 @@ class VersionUpgrade462to47(VersionUpgrade):
         # Update version number.
         parser["metadata"]["setting_version"] = "15"
         
+        # Remove deleted settings from the visible settings list.
+        if "general" in parser and "visible_settings" in parser["general"]:
+            parser["general"]["visible_settings"] = ";".join(
+                set(parser["general"]["visible_settings"].split(";")).difference(_removed_settings))
+
         result = io.StringIO()
         parser.write(result)
         return [filename], [result.getvalue()]