Divisor-Cycle Cache Rework

PerfectNumbers.Core/IMersenneNumberDivisorByDivisorTester.cs

@@ -4,8 +4,6 @@ namespace PerfectNumbers.Core;
 
 public interface IMersenneNumberDivisorByDivisorTester
 {
-    bool UseDivisorCycles { get; set; } // TODO: Remove the setter once divisor cycle usage becomes mandatory so all implementations always leverage the cached cycles.
-
     int BatchSize { get; set; }
 
     void ConfigureFromMaxPrime(ulong maxPrime);
@@ -25,4 +23,3 @@ public interface IMersenneNumberDivisorByDivisorTester
         void CheckDivisor(ulong divisor, ulong divisorCycle, ReadOnlySpan<ulong> primes, Span<byte> hits);
     }
 }
-