Remove duplicate externalized message

Instead of a new "unexpectedNlinkValue" message use the already
existing "failedAtomicFileCreation". Remove a stray double quote
from the latter.

Change-Id: I1ba5e9ea48d3f7615354b2ace2575883070b3206
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>

org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties

 expectedPktLineWithService=expected pkt-line with ''# service=-'', got ''{0}''
 expectedReceivedContentType=expected Content-Type {0}; received Content-Type {1}
 expectedReportForRefNotReceived={0}: expected report for ref {1} not received
-failedAtomicFileCreation=Atomic file creation failed, number of hard links to file {0} was not 2 but {1}"
+failedAtomicFileCreation=Atomic file creation failed, number of hard links to file {0} was not 2 but {1}
 failedToDetermineFilterDefinition=An exception occurred while determining filter definitions
 failedUpdatingRefs=failed updating refs
 failureDueToOneOfTheFollowing=Failure due to one of the following:
 unexpectedEndOfInput=Unexpected end of input
 unexpectedEofInPack=Unexpected EOF in partially created pack
 unexpectedHunkTrailer=Unexpected hunk trailer
-unexpectedNlinkValue=nlink of link to lock file {0} was not 2 but {1}
 unexpectedOddResult=odd: {0} + {1} - {2}
 unexpectedPacketLine=unexpected {0}
 unexpectedRefReport={0}: unexpected ref report: {1}

org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java

 	/***/ public String unexpectedEndOfInput;
 	/***/ public String unexpectedEofInPack;
 	/***/ public String unexpectedHunkTrailer;
-	/***/ public String unexpectedNlinkValue;
 	/***/ public String unexpectedOddResult;
 	/***/ public String unexpectedPacketLine;
 	/***/ public String unexpectedRefReport;

org.eclipse.jgit/src/org/eclipse/jgit/util/FS_POSIX.java

 					"unix:nlink")); //$NON-NLS-1$
 			if (nlink > 2) {
 				LOG.warn(MessageFormat.format(
-						JGitText.get().unexpectedNlinkValue, lock.getPath(),
+						JGitText.get().failedAtomicFileCreation, lockPath,
 						nlink));
 				return false;
 			} else if (nlink < 2) {