rename/remove unused parameters (#3291)

sd-card/config/config.ini

@@ -36,11 +36,9 @@ Demo = false
 
 [Alignment]
 InitialRotate = 0.0
-InitialMirror = false
 SearchFieldX = 20
 SearchFieldY = 20
 AlignmentAlgo = Default
-FlipImageSize = false
 /config/ref0.jpg 103 271
 /config/ref1.jpg 442 142
 
@@ -103,7 +101,7 @@ HomeassistantDiscovery = false
 ;Measurement = undefined
 ;Org = undefined
 ;Token = undefined
-;main.Fieldname = undefined
+;main.Field = undefined
 
 ;[Webhook]
 ;Uri = undefined