fix warning

Author: sandy081

src/vs/workbench/common/theme.ts

@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import { localize } from 'vs/nls';
-import { registerColor, editorBackground, contrastBorder, transparent, editorWidgetBackground, textLinkForeground, lighten, darken, focusBorder, activeContrastBorder, editorWidgetForeground, editorErrorForeground, editorWarningForeground, editorInfoForeground, treeIndentGuidesStroke, errorForeground, listActiveSelectionBackground, listActiveSelectionForeground, editorForeground, toolbarHoverBackground, inputBorder, widgetBorder, foreground } from 'vs/platform/theme/common/colorRegistry';
+import { registerColor, editorBackground, contrastBorder, transparent, editorWidgetBackground, textLinkForeground, lighten, darken, focusBorder, activeContrastBorder, editorWidgetForeground, editorErrorForeground, editorWarningForeground, editorInfoForeground, treeIndentGuidesStroke, errorForeground, listActiveSelectionBackground, listActiveSelectionForeground, editorForeground, toolbarHoverBackground, inputBorder, widgetBorder } from 'vs/platform/theme/common/colorRegistry';
 import { IColorTheme } from 'vs/platform/theme/common/themeService';
 import { Color } from 'vs/base/common/color';
 import { ColorScheme } from 'vs/platform/theme/common/theme';