Don't remove empty lines from logs returned by the server.

Author: cowwoc

src/main/java/com/github/cowwoc/docker/internal/util/AsyncResponseListener.java

@@ -70,8 +70,7 @@ protected void processObject(String object)
 			{
 				String message = node.textValue();
 				warnOnUnexpectedProperties(json, "message");
-				for (String line : Strings.split(message))
-					log.info(line);
+				log.info(message);
 				return;
 			}
 			node = json.get("errorDetail");

src/main/java/com/github/cowwoc/docker/internal/util/JsonStreamListener.java

@@ -159,8 +159,7 @@ protected void logMessage(String message, Level level)
 		{
 			// Only log the status if it's changed or PROGRESS_FREQUENCY has elapsed
 			messageToTime.put(message, now);
-			for (String line : Strings.split(message))
-				log.atLevel(level).log(line);
+			log.atLevel(level).log(message);
 		}
 	}
 }

src/main/java/com/github/cowwoc/docker/internal/util/Strings.java

@@ -3,8 +3,6 @@
 import java.text.DecimalFormat;
 import java.text.DecimalFormatSymbols;
 import java.text.NumberFormat;
-import java.util.ArrayList;
-import java.util.List;
 import java.util.Locale;
 
 /**
@@ -31,31 +29,6 @@ public static String format(long value)
 		return FORMATTER.get().format(value);
 	}
 
-	/**
-	 * Splits a String into multiple lines, omitting any empty lines.
-	 *
-	 * @param lines zero or more lines of text
-	 * @return a collection of lines
-	 * @throws NullPointerException if {@code text} is null
-	 */
-	public static List<String> split(String lines)
-	{
-		List<String> result = new ArrayList<>();
-		while (true)
-		{
-			int index = lines.indexOf('\n');
-			if (index == -1)
-				break;
-			String line = lines.substring(0, index);
-			if (!line.isBlank())
-				result.add(line);
-			lines = lines.substring(index + 1);
-		}
-		if (!lines.isBlank())
-			result.add(lines);
-		return result;
-	}
-
 	private Strings()
 	{
 	}