Revert "Merge pull request #483 from Dabz/v6-relocating-slf4j"

This reverts commit 438dc93, reversing
changes made to 4d5bd06.

Author: bevzzz

pom.xml

@@ -494,10 +494,6 @@
                 <pattern>io.grpc</pattern>
                 <shadedPattern>io.weaviate.shaded.io.grpc</shadedPattern>
               </relocation>
-              <relocation>
-                <pattern>org.slf4j</pattern>
-                <shadedPattern>io.weaviate.shaded.org.slf4j</shadedPattern>
-              </relocation>
             </relocations>
           </configuration>
           <executions>