Tiny cleanup

PerfectNumbers.Core/Gpu/MersenneNumberDivisorByDivisorGpuTester.cs

@@ -316,11 +316,6 @@ public sealed class MersenneNumberDivisorByDivisorGpuTester
 				throw new ObjectDisposedException(nameof(DivisorScanSession));
 			}
 
-                        if (primes.Length == 0)
-                        {
-                                return;
-                        }
-
 			int offset = 0;
 			int consoleStatus = 0;
 			bool useCycles = _owner._useDivisorCycles;