Stop checking MN protocol version before signalling DIP3 (#2684)

Author: codablock

src/versionbits.cpp

@@ -30,7 +30,7 @@ const struct BIP9DeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION
     {
         /*.name =*/ "dip0003",
         /*.gbt_force =*/ true,
-        /*.check_mn_protocol =*/ true,
+        /*.check_mn_protocol =*/ false,
     }
 };