Value Types: remove unnecessary prefixes from enumeration constants

Some of our Value types had constants with superflous prefixes
e.g., IpProtocol.IP_PROTO_TCP instead of IpProtocol.TCP

This commit removes those
diff --git a/java_gen/templates/custom/OFMatchV1Ver10.Builder_normalize_set_wildcards_stanza.java b/java_gen/templates/custom/OFMatchV1Ver10.Builder_normalize_set_wildcards_stanza.java
index 3545f55..09cb411 100644
--- a/java_gen/templates/custom/OFMatchV1Ver10.Builder_normalize_set_wildcards_stanza.java
+++ b/java_gen/templates/custom/OFMatchV1Ver10.Builder_normalize_set_wildcards_stanza.java
@@ -3,7 +3,7 @@
             // ip_src, tcp_dst) to 0, and sets the wildcard bit to 1.
             if(ethType.equals(EthType.IPv4)) {
                 // IP
-                if(ipProto.equals(IpProtocol.IP_PROTO_TCP) || ipProto.equals(IpProtocol.IP_PROTO_UDP) || ipProto.equals(IpProtocol.IP_PROTO_ICMP)) {
+                if(ipProto.equals(IpProtocol.TCP) || ipProto.equals(IpProtocol.UDP) || ipProto.equals(IpProtocol.ICMP)) {
                     // fully speced, wildcards and all values are fine
                     // normalize 32-63 ipv4 src 'mask' to a full bitmask
                     if((wildcards & OFPFW_NW_SRC_ALL) != 0)