Removing (unused) references to no-longer-existing documentation of Log window

Source commit: d4d3adbc713f67806490bb99bea1be1029ec104a

source/forms/Log.dfm

@@ -1,8 +1,6 @@
 object LogForm: TLogForm
   Left = 356
   Top = 178
-  HelpType = htKeyword
-  HelpKeyword = 'ui_log'
   BorderIcons = [biSystemMenu, biMinimize, biMaximize, biHelp]
   Caption = 'Log'
   ClientHeight = 303

source/forms/NonVisual.dfm

@@ -653,7 +653,6 @@ object NonVisualDataModule: TNonVisualDataModule
       Tag = 15
       Category = 'View'
       Caption = 'Lo&g Window'
-      HelpKeyword = 'ui_log'
       Hint = 'Show/hide log window'
       ImageIndex = 24
       Visible = False