Removing unnecessary repos (#4117)

Signed-off-by: Kai Kreuzer <kai@openhab.org>

pom.xml

@@ -471,32 +471,4 @@
     </profile>
   </profiles>
 
-  <pluginRepositories>
-    <pluginRepository>
-      <id>tycho-snapshots</id>
-      <url>https://oss.sonatype.org/content/groups/public/</url>
-    </pluginRepository>
-    <pluginRepository>
-      <id>cbi-releases</id>
-      <url>https://repo.eclipse.org/content/repositories/cbi-releases/</url>
-    </pluginRepository>
-    <pluginRepository>
-      <id>buchen-maven-repo</id>
-      <url>http://buchen.github.io/maven-repo</url>
-      <layout>default</layout>
-    </pluginRepository>
-  </pluginRepositories>
-
-  <repositories>
-    <repository>
-      <id>eclipse</id>
-      <name>Eclipse Snapshot Repository</name>
-      <layout>default</layout>
-      <url>https://repo.eclipse.org/content/repositories/snapshots/</url>
-      <snapshots>
-        <enabled>true</enabled>
-      </snapshots>
-    </repository>
-  </repositories>
-
 </project>