Removing unnecessary bracket/singleton set literal.

cpp/ql/src/Security/CWE/CWE-704/WcharCharConversion.ql

@@ -39,7 +39,7 @@ class UnlikelyToBeAStringType extends Type {
     exists(Type targ | getABaseType(this) = targ |
       // NOTE: not using CharType isUnsigned, but rather look for any explicitly declared unsigned
       // char types. Assuming these are used for buffers, not strings.
-      targ.(CharType).getName().toLowerCase().matches(["unsigned%"]) or
+      targ.(CharType).getName().toLowerCase().matches("unsigned%") or
       targ.getName().toLowerCase().matches(["uint8_t", "%byte%"])
     )
   }