feat: Unused images are cleaned even without -a flag (#1551)

## Description:
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## Is this change user facing?
YES
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Closes #1523

cli/cli/commands/clean/clean.go

@@ -89,21 +89,8 @@ func run(
 		},
 	}
 
-	executeOnlyIfAllFlagIsEnabled := map[string]bool{
-		oldEngineCleaningPhaseTitle: false,
-		enclavesCleaningPhaseTitle:  false,
-		unusedImagesPhaseTitle:      true,
-	}
-
 	phasesWithErrors := []string{}
 	for phaseTitle, cleaningFunc := range cleaningPhaseFunctions {
-		onlyIfAllFlag, found := executeOnlyIfAllFlagIsEnabled[phaseTitle]
-		if !found {
-			return stacktrace.NewError("Couldn't find phase %s in executeOnlyIfAllFlagIsEnabled. This is a bug in Kurtosis", phaseTitle)
-		}
-		if onlyIfAllFlag && !shouldCleanAll {
-			continue
-		}
 		logrus.Infof("Cleaning %v...", phaseTitle)
 		successfullyRemovedArtifactUuids, removalErrors, err := cleaningFunc()
 		if err != nil {