Removed unused slf4j from configuration lib

Change-Id: I000f051f0e5fceafded7f06e8088e019cf1b730e
Issue-ID: SDC-1478
Signed-off-by: vempo <vitaliy.emporopulo@amdocs.com>
diff --git a/common/pom.xml b/common/pom.xml
index 65a6c07..eea619f 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -28,7 +28,7 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>1.7.10</version>
+            <version>${slf4j-api.version}</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>