Don't clutter log with messages about missing SLF4J, as Cindy is not using SLF4J.

Author: mkarg

pom.xml

@@ -57,6 +57,18 @@
 			<groupId>org.mnode.ical4j</groupId>
 			<artifactId>ical4j</artifactId>
 			<version>${ical4j.version}</version>
+			<exclusions>
+				<exclusion>
+					<groupId>org.slf4j</groupId>
+					<artifactId>slf4j-api</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-nop</artifactId>
+			<version>1.7.32</version>
 		</dependency>
 
 		<dependency>