[hotfix][build][sql] Remove slf4j/log4j dependencies

The SQL client does not require explicit slf4j/log4j dependencies.
slf4j-api is already defined in the root pom, whereas the log4j-related dependencies are just not necessary since the distribution provides them.

flink-table/flink-sql-client/pom.xml

@@ -96,26 +96,6 @@ under the License.
 			<version>${project.version}</version>
 		</dependency>
 
-		<!-- logging utilities -->
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-log4j12</artifactId>
-			<version>${slf4j.version}</version>
-		</dependency>
-
-		<dependency>
-			<groupId>log4j</groupId>
-			<artifactId>log4j</artifactId>
-			<version>${log4j.version}</version>
-		</dependency>
-
-		<!-- logging -->
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-api</artifactId>
-			<version>${slf4j.version}</version>
-		</dependency>
-
 		<!-- CLI for SQL CLI client -->
 		<dependency>
 			<groupId>org.jline</groupId>