Remove delombok shorthand for onlyChanged, fixes #1705

doc/changelog.markdown

@@ -3,6 +3,7 @@ Lombok Changelog
 
 ### v1.16.23 "Edgy Guinea Pig"
 * v1.16.22 is the latest stable release of Project Lombok.
+* BUGFIX: Delombok would give an error message. [Issue #1705](https://github.com/rzwitserloot/lombok/issues/1705)
 
 ### v1.16.22 "Envious Ferret" (May 29th, 2018)
 * FEATURE: Private no-args constructor for `@Data` and `@Value` to enable deserialization frameworks (like Jackson) to operate out-of-the-box. Use `lombok.noArgsConstructor.extraPrivate = false` to disable this behavior.

src/delombok/lombok/delombok/Delombok.java

@@ -147,7 +147,6 @@ public class Delombok {
 		private boolean nocopy;
 		
 		@Description("Output only changed files (implies -n)")
-		@Shorthand("c")
 		private boolean onlyChanged;
 		
 		private boolean help;