Remove an obsolete TODO

The javac bug is long fixed. I noticed this debugging b/451598162, but it's unrelated.

PiperOrigin-RevId: 821649085

Author: cushon

core/src/main/java/com/google/errorprone/bugpatterns/javadoc/InvalidLink.java

@@ -24,7 +24,6 @@
 import static com.google.errorprone.bugpatterns.javadoc.Utils.getStartPosition;
 import static com.google.errorprone.bugpatterns.javadoc.Utils.replace;
 import static com.google.errorprone.matchers.Description.NO_MATCH;
-import static com.google.errorprone.util.ErrorProneLog.deferredDiagnosticHandler;
 
 import com.google.common.collect.ImmutableSet;
 import com.google.errorprone.BugPattern;
@@ -47,7 +46,6 @@
 import com.sun.tools.javac.api.JavacTrees;
 import com.sun.tools.javac.tree.DCTree.DCDocComment;
 import com.sun.tools.javac.tree.DCTree.DCText;
-import com.sun.tools.javac.util.Log;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import javax.lang.model.element.Element;
@@ -145,21 +143,9 @@ public Void visitLink(LinkTree linkTree, Void unused) {
         return super.visitLink(linkTree, null);
       }
       String reference = linkTree.getReference().getSignature();
-      Element element = null;
-      Log log = Log.instance(state.context);
-      // Install a deferred diagnostic handler before calling DocTrees.getElement(DocTreePath)
-      // TODO(cushon): revert if https://bugs.openjdk.java.net/browse/JDK-8248117 is fixed
-      Log.DeferredDiagnosticHandler deferredDiagnosticHandler = deferredDiagnosticHandler(log);
-      try {
-        element =
-            JavacTrees.instance(state.context)
-                .getElement(new DocTreePath(getCurrentPath(), linkTree.getReference()));
-      } catch (NullPointerException | AssertionError e) {
-        // TODO(b/176098078): remove once JDK 12 is the minimum supported version
-        // https://bugs.openjdk.java.net/browse/JDK-8200432
-      } finally {
-        log.popDiagnosticHandler(deferredDiagnosticHandler);
-      }
+      Element element =
+          JavacTrees.instance(state.context)
+              .getElement(new DocTreePath(getCurrentPath(), linkTree.getReference()));
       // Don't warn about fully qualified types; they won't always be known at compile-time.
       if (element != null || reference.contains(".")) {
         return super.visitLink(linkTree, null);