Drop of generated scanner and example scanner driver.

pkg/analyzer-experimental/lib/src/generated/java_engine.dart

+library java.engine;
+
+import "java_core.dart";
+import "source.dart";
+import "error.dart";
+import "ast.dart";
+import "element.dart";
+
+class AnalysisException implements Exception {
+  String toString() => "AnalysisException";
+}
+
+class AnalysisEngine {
+  static getInstance() {
+    throw new UnsupportedOperationException();
+  }
+}
+
+class AnalysisContext {
+  Element getElement(ElementLocation location) {
+    throw new UnsupportedOperationException();
+  }
+}
+
+class AnalysisContextImpl extends AnalysisContext {
+  getSourceFactory() {
+    throw new UnsupportedOperationException();
+  }
+  LibraryElement getLibraryElementOrNull(Source source) {
+    return null;
+  }
+  LibraryElement getLibraryElement(Source source) {
+    throw new UnsupportedOperationException();
+  }
+  void recordLibraryElements(Map<Source, LibraryElement> elementMap) {
+    throw new UnsupportedOperationException();
+  }
+  getPublicNamespace(LibraryElement library) {
+    throw new UnsupportedOperationException();
+  }
+  CompilationUnit parse(Source source, AnalysisErrorListener errorListener) {
+    throw new UnsupportedOperationException();
+  }
+}
+
+class StringUtilities {
+  static List<String> EMPTY_ARRAY = new List.fixedLength(0);
+}