Replace occurrences of Wrapped.valueOf(...) with Wrapped.parseWrapped(...)

where the value will be immediately unboxed anyway.

The change removes small-but-pervasive inefficiencies from creating and
immediately discarding instances of the wrapped value, as well as removing
unnecessary syntax.

More information: []

Tested:
    TAP --sample for global presubmit queue
    []

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=189704431

java/google/registry/tldconfig/idn/IdnTable.java

@@ -137,6 +137,6 @@ public final class IdnTable {
     checkArgument(matcher.lookingAt(), "Can't parse line: %s", line);
 
     String hexString = matcher.group(1);
-    return Integer.valueOf(hexString, 16);
+    return Integer.parseInt(hexString, 16);
   }
 }