Remove commons-logging exclusion.

Closes #4870

Author: mp911de

spring-data-mongodb/pom.xml

@@ -67,12 +67,6 @@
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-core</artifactId>
-			<exclusions>
-				<exclusion>
-					<groupId>commons-logging</groupId>
-					<artifactId>commons-logging</artifactId>
-				</exclusion>
-			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>