Stop disabling annotation processing in Eclipse

Closes gh-341

Author: wilkinsona

Diff for: spring-javaformat-eclipse/io.spring.javaformat.eclipse/src/io/spring/javaformat/eclipse/projectsettings/org.eclipse.jdt.core.prefs

@@ -101,5 +101,4 @@ org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disa
 org.eclipse.jdt.core.compiler.problem.unusedPrivateMember=warning
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.processAnnotations=disabled
 org.eclipse.jdt.core.javaFormatter=io.spring.javaformat.eclipse.formatter.jdk11.tabs