Remove Spring Framework version override.

We're on Spring 6.0 M2 already so no need for snapshots.

Closes spring-projects#560

Author: mp911de

pom.xml

@@ -49,7 +49,6 @@
 		<log4j.version>2.16.0</log4j.version>
 		<multithreadedtc.version>1.01</multithreadedtc.version>
 		<snappy.version>0.4</snappy.version>
-		<spring>6.0.0-SNAPSHOT</spring>
 		<springdata.commons>3.0.0-SNAPSHOT</springdata.commons>
 		<spring-shell.version>1.2.0.RELEASE</spring-shell.version>
 	</properties>