clean up a few unthrown exceptions (#1232)

* clean up a few unthrown exceptions

Author: elharo

src/main/java/org/apache/maven/plugins/javadoc/AbstractFixJavadocMojo.java

@@ -2412,9 +2412,8 @@ private boolean isNewClassFromLastVersion(JavaClass javaClass) {
      * @param javaExecutable a given method not null
      * @return <code>true</code> if Clirr said that this method is added from the last version,
      *         <code>false</code> otherwise or if {@link #clirrNewMethods} is null.
-     * @throws MojoExecutionException if any
      */
-    private boolean isNewMethodFromLastRevision(JavaExecutable javaExecutable) throws MojoExecutionException {
+    private boolean isNewMethodFromLastRevision(JavaExecutable javaExecutable) {
         if (clirrNewMethods == null) {
             return false;
         }

src/main/java/org/apache/maven/plugins/javadoc/JavadocUtil.java

@@ -373,7 +373,7 @@ protected static Collection<String> getExcludedPackages(
         try {
             Files.walkFileTree(sourceDirectory, new SimpleFileVisitor<Path>() {
                 @Override
-                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
+                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
                     if (file.getFileName().toString().endsWith(".java")) {
                         fileList.add(
                                 sourceDirectory.relativize(file.getParent()).toString());

src/main/java/org/apache/maven/plugins/javadoc/resolver/ResourceResolver.java

@@ -222,7 +222,7 @@ private List<JavadocBundle> resolveBundlesFromArtifacts(
         Collection<Path> dirs = new ArrayList<>(toResolve.size());
         try {
             dirs = resolveAndUnpack(toResolve, config, RESOURCE_VALID_CLASSIFIERS, false);
-        } catch (ArtifactResolutionException | ArtifactNotFoundException e) {
+        } catch (ArtifactResolutionException e) {
             if (LOGGER.isDebugEnabled()) {
                 LOGGER.debug(e.getMessage(), e);
             }
@@ -289,14 +289,13 @@ private org.eclipse.aether.artifact.Artifact createResourceArtifact(
      * @param propagateErrors
      * @return list of <dependencyConflictId, absolutePath>
      * @throws ArtifactResolutionException if an exception occurs
-     * @throws ArtifactNotFoundException if an exception occurs
      */
     private Collection<Path> resolveAndUnpack(
             final List<org.eclipse.aether.artifact.Artifact> artifacts,
             final SourceResolverConfig config,
             final List<String> validClassifiers,
             final boolean propagateErrors)
-            throws ArtifactResolutionException, ArtifactNotFoundException {
+            throws ArtifactResolutionException {
         // NOTE: Since these are '-sources' and '-test-sources' artifacts, they won't actually
         // resolve transitively...this is just used to aggregate resolution failures into a single
         // exception.