Use replace instead of replaceAll in toCleanString

This is from SonarLint (rule.java:S4348)
Regex patterns should not be created needlessly:

When String::replaceAll is used, the first argument should be a real
regular expression. If it’s not the case, String::replace does exactly
the same thing as String::replaceAll without the performance drawback of
the regex.

Change-Id: I00ba967ff4a27eeeb6fccf9373f6df2c94ecd823

org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java
index 81a70af..4fec5da 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java
@@ -115,7 +115,7 @@ private static String toCleanString(List<String> list) {
 		for (String v : list) {
 			if (s.length() > 0)
 				s.append(',');
-			s.append(v.replaceAll("\n", "").trim()); //$NON-NLS-1$ //$NON-NLS-2$
+			s.append(v.replace("\n", "").trim()); //$NON-NLS-1$ //$NON-NLS-2$
 		}
 		return s.toString();
 	}