gdiplus: Remove three unused constants.

dlls/gdiplus/tests/font.c

@@ -32,11 +32,8 @@
 
 static const WCHAR nonexistent[] = {'T','h','i','s','F','o','n','t','s','h','o','u','l','d','N','o','t','E','x','i','s','t','\0'};
 static const WCHAR MSSansSerif[] = {'M','S',' ','S','a','n','s',' ','S','e','r','i','f','\0'};
-static const WCHAR MicrosoftSansSerif[] = {'M','i','c','r','o','s','o','f','t',' ','S','a','n','s',' ','S','e','r','i','f','\0'};
 static const WCHAR TimesNewRoman[] = {'T','i','m','e','s',' ','N','e','w',' ','R','o','m','a','n','\0'};
-static const WCHAR CourierNew[] = {'C','o','u','r','i','e','r',' ','N','e','w','\0'};
 static const WCHAR Tahoma[] = {'T','a','h','o','m','a',0};
-static const WCHAR LiberationSerif[] = {'L','i','b','e','r','a','t','i','o','n',' ','S','e','r','i','f',0};
 
 static void set_rect_empty(RectF *rc)
 {