Polish unused imports

spring-shell-core/src/main/java/org/springframework/shell/Shell.java

@@ -33,7 +33,6 @@ import javax.validation.ConstraintViolation;
 import javax.validation.Validation;
 import javax.validation.Validator;
 import javax.validation.ValidatorFactory;
-import javax.validation.executable.ExecutableValidator;
 
 import org.jline.utils.Signals;
 
@@ -149,7 +148,7 @@ public class Shell implements CommandRegistry {
 	/**
 	 * Evaluate a single "line" of input from the user by trying to map words to a command and
 	 * arguments.
-	 * 
+	 *
 	 * <p>
 	 * This method does not throw exceptions, it catches them and returns them as a regular
 	 * result

spring-shell-core/src/main/java/org/springframework/shell/result/AttributedCharSequenceResultHandler.java

@@ -19,7 +19,6 @@ package org.springframework.shell.result;
 import org.jline.utils.AttributedCharSequence;
 
 import org.springframework.shell.ResultHandler;
-import org.springframework.stereotype.Component;
 
 /**
  * A {@link ResultHandler} that knows how to render JLine's {@link AttributedCharSequence}.

spring-shell-core/src/main/java/org/springframework/shell/result/DefaultResultHandler.java

@@ -17,7 +17,6 @@
 package org.springframework.shell.result;
 
 import org.springframework.shell.ResultHandler;
-import org.springframework.stereotype.Component;
 
 /**
  * A simple {@link ResultHandler} that deals with Objects (hence comes as a last resort)

spring-shell-core/src/main/java/org/springframework/shell/result/IterableResultHandler.java

@@ -17,7 +17,6 @@
 package org.springframework.shell.result;
 
 import org.springframework.shell.ResultHandler;
-import org.springframework.stereotype.Component;
 
 /**
  * A {@link ResultHandler} that deals with {@link Iterable}s and delegates to

spring-shell-core/src/main/java/org/springframework/shell/result/ParameterValidationExceptionResultHandler.java

@@ -16,24 +16,24 @@
 
 package org.springframework.shell.result;
 
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
+
+import javax.validation.ElementKind;
+import javax.validation.Path;
+
 import org.jline.utils.AttributedString;
 import org.jline.utils.AttributedStringBuilder;
 import org.jline.utils.AttributedStyle;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.MethodParameter;
 import org.springframework.shell.ParameterDescription;
 import org.springframework.shell.ParameterResolver;
 import org.springframework.shell.ParameterValidationException;
 import org.springframework.shell.Utils;
-import org.springframework.stereotype.Component;
-
-import javax.validation.ElementKind;
-import javax.validation.Path;
-import java.util.List;
-import java.util.Optional;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-import java.util.stream.StreamSupport;
 
 /**
  * Displays validation errors on the terminal.

spring-shell-core/src/main/java/org/springframework/shell/result/TerminalSizeAwareResultHandler.java

@@ -16,7 +16,6 @@
 
 package org.springframework.shell.result;
 
-import org.springframework.shell.ResultHandler;
 import org.springframework.shell.TerminalSizeAware;
 
 /**

spring-shell-core/src/main/java/org/springframework/shell/result/ThrowableResultHandler.java

@@ -25,7 +25,6 @@ import org.springframework.context.annotation.Lazy;
 import org.springframework.shell.CommandRegistry;
 import org.springframework.shell.ResultHandler;
 import org.springframework.shell.jline.InteractiveShellApplicationRunner;
-import org.springframework.stereotype.Component;
 import org.springframework.util.StringUtils;
 
 /**

spring-shell-core/src/main/java/org/springframework/shell/result/TypeHierarchyResultHandler.java

@@ -16,8 +16,6 @@
 
 package org.springframework.shell.result;
 
-import java.lang.reflect.ParameterizedType;
-import java.lang.reflect.Type;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;