Do not require SV-COMP24 config to run with 900s anymore

900s is the default, but with a parallel-portfolio approach, we can be more lenient
about the run time.

git-svn-id: https://svn.sosy-lab.org/software/cpachecker/branches/svcomp24-parallel-portfolio-approach@45052 4712c6d2-40bb-43ae-aa4b-fec3f1bdfe4c

config/svcomp24.properties

@@ -70,7 +70,7 @@ cpa.callstack.unsupportedFunctions=pthread_create,pthread_key_create,sin,cos,__b
 # malloc never returns null according to SV-Comp rules
 cpa.predicate.memoryAllocationsAlwaysSucceed = true
 
-limits.time.cpu::required = 900
+limits.time.cpu = 900
 
 
 # Our main analysis based on heuristics and strategy selection: