remove unused file

platform/ui/src/styles/theme.js

@@ -1,46 +0,0 @@
-const theme = {
-  palette: {
-    action: {
-      hoverOpacity: 0.4,
-      disabledBackground: '',
-      disabled: '',
-    },
-    default: {
-      light: '#eee',
-      main: '#ccc',
-      dark: '#aaa',
-    },
-    primary: {
-      light: '#0000ff',
-      main: '#0000aa',
-      dark: '#000099',
-    },
-    secondary: {
-      light: '#ff0000',
-      main: '#aa0000',
-      dark: '#990000',
-    },
-    error: {
-      light: '',
-      main: '',
-      dark: '',
-    },
-    info: {
-      light: '',
-      main: '',
-      dark: '',
-    },
-    warning: {
-      light: '',
-      main: '',
-      dark: '',
-    },
-    success: {
-      light: '',
-      main: '',
-      dark: '',
-    },
-  },
-};
-
-export default theme;