DATAJDBC-201 - Cleaned up logging related dependencies.

Excluded dependency on jcl-over-slf4j.
Removed now superfluous exclusion of commons-logging.

Original pull request: #62.

pom.xml

@@ -178,12 +178,6 @@
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-core</artifactId>
-			<exclusions>
-				<exclusion>
-					<groupId>commons-logging</groupId>
-					<artifactId>commons-logging</artifactId>
-				</exclusion>
-			</exclusions>
 		</dependency>
 
 		<dependency>
@@ -247,6 +241,12 @@
 			<artifactId>mysql</artifactId>
 			<version>${testcontainers.version}</version>
 			<scope>test</scope>
+			<exclusions>
+				<exclusion>
+					<groupId>org.slf4j</groupId>
+					<artifactId>jcl-over-slf4j</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 
 		<dependency>