There is no reason to manage com.codahale.metrics:metrics-core

(cherry picked from commit e226d5d)
Signed-off-by: Stefan Negrea <snegrea@redhat.com>

pom.xml

@@ -99,7 +99,6 @@
     <!-- Dependencies versions -->
     <version.org.hawkular.accounts>2.0.22.Final</version.org.hawkular.accounts>
     <version.org.hawkular.commons>0.4.0.Final</version.org.hawkular.commons>
-    <version.com.codahale.metrics>3.0.2</version.com.codahale.metrics>
     <version.javax.enterprise.cdi-api>1.2</version.javax.enterprise.cdi-api>
     <version.joda-time>2.7</version.joda-time>
     <version.logback>1.1.3</version.logback>
@@ -218,11 +217,6 @@
         <artifactId>antlr4-runtime</artifactId>
         <version>${version.org.antlr}</version>
       </dependency>
-      <dependency>
-        <groupId>com.codahale.metrics</groupId>
-        <artifactId>metrics-core</artifactId>
-        <version>${version.com.codahale.metrics}</version>
-      </dependency>
       <!-- Doc dependencies -->
       <dependency>
         <groupId>io.swagger</groupId>