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/request/RequestParameters.java

@@ -84,7 +84,7 @@ public final class RequestParameters {
    */
   public static int extractIntParameter(HttpServletRequest req, String name) {
     try {
-      return Integer.valueOf(nullToEmpty(req.getParameter(name)));
+      return Integer.parseInt(nullToEmpty(req.getParameter(name)));
     } catch (NumberFormatException e) {
       throw new BadRequestException("Expected integer: " + name);
     }