Fix overlapping netty dependency when shading.
Why does this protocol library even include the entirety of netty?!?
<artifactId>connector</artifactId>
<dependencies>
<dependency>
-
<groupId>org.geysermc</groupId>
<artifactId>api</artifactId>
<version>1.0-SNAPSHOT</version>
<artifactId>packetlib</artifactId>
<version>1.4-SNAPSHOT</version>
<scope>compile</scope>
+ <exclusions>
+ <exclusion>
+ <groupId>io.netty</groupId>
+ <artifactId>netty-all</artifactId>
+ </exclusion>
+ </exclusions>
</dependency>
<dependency>
<groupId>com.github.steveice10</groupId>
