std::unicode: remove unused category tables

Author: Piotr Zolnierek

src/etc/unicode.py

@@ -165,7 +165,10 @@ def emit_property_module(f, mod, tbl):
     keys.sort()
     emit_bsearch_range_table(f);
     for cat in keys:
-        if cat == "Cs": continue
+        if cat not in ["Nd", "Nl", "No", "Cc",
+                "XID_Start", "XID_Continue", "Alphabetic",
+                "Lowercase", "Uppercase", "White_Space"]:
+                continue
         f.write("    static %s_table : &'static [(char,char)] = &[\n" % cat)
         ix = 0
         for pair in tbl[cat]: