Delete the unneeded LintPolicy.

Author: nedtwigg

lib/src/main/java/com/diffplug/spotless/DirtyState.java

@@ -80,7 +80,7 @@ public static DirtyState of(Formatter formatter, File file, byte[] rawBytes) {
 	public static DirtyState of(Formatter formatter, File file, byte[] rawBytes, String raw) {
 		var valuePerStep = new ValuePerStep<Throwable>(formatter);
 		DirtyState state = of(formatter, file, rawBytes, raw, valuePerStep);
-		LintPolicy.legacyBehavior(formatter, file, valuePerStep);
+		Formatter.legacyErrorBehavior(formatter, file, valuePerStep);
 		return state;
 	}
 

lib/src/main/java/com/diffplug/spotless/Formatter.java

@@ -28,6 +28,9 @@
 import java.util.List;
 import java.util.Objects;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /** Formatter which performs the full formatting. */
 public final class Formatter implements Serializable, AutoCloseable {
 	private static final long serialVersionUID = 1L;
@@ -130,10 +133,22 @@ public String computeLineEndings(String unix, File file) {
 	public String compute(String unix, File file) {
 		ValuePerStep<Throwable> exceptionPerStep = new ValuePerStep<>(this);
 		String result = computeWithLint(unix, file, exceptionPerStep);
-		LintPolicy.legacyBehavior(this, file, exceptionPerStep);
+		legacyErrorBehavior(this, file, exceptionPerStep);
 		return result;
 	}
 
+	static void legacyErrorBehavior(Formatter formatter, File file, ValuePerStep<Throwable> exceptionPerStep) {
+		for (int i = 0; i < formatter.getSteps().size(); ++i) {
+			Throwable exception = exceptionPerStep.get(i);
+			if (exception != null && exception != LintState.formatStepCausedNoChange()) {
+				logger.error("Step '{}' found problem in '{}':\n{}", formatter.getSteps().get(i), file.getName(), exception.getMessage(), exception);
+				throw ThrowingEx.asRuntimeRethrowError(exception);
+			}
+		}
+	}
+
+	private static final Logger logger = LoggerFactory.getLogger(Formatter.class);
+
 	/**
 	 * Returns the result of calling all of the FormatterSteps, while also
 	 * tracking any exceptions which are thrown.