Checks: Remove declaration of IOException which is never thrown

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: Ifa5275c0ad90dbf15bcb21639afd4af191a1dd35
diff --git a/java/com/google/gerrit/plugins/checks/Checks.java b/java/com/google/gerrit/plugins/checks/Checks.java
index 84d19cd..747d81b 100644
--- a/java/com/google/gerrit/plugins/checks/Checks.java
+++ b/java/com/google/gerrit/plugins/checks/Checks.java
@@ -18,7 +18,6 @@
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gwtorm.server.OrmException;
-import java.io.IOException;
 import java.util.List;
 import java.util.Optional;
 
@@ -40,14 +39,13 @@
    * @param patchSetId the ID of the patch set
    * @return the checks, {@link Optional#empty()} if no checks with the given UUID exists
    * @throws OrmException if the checks couldn't be retrieved from the storage
-   * @throws IOException if the checks couldn't be retrieved from the storage
    */
   ImmutableList<Check> getChecks(Project.NameKey projectName, PatchSet.Id patchSetId)
-      throws OrmException, IOException;
+      throws OrmException;
 
   /**
    * Returns a {@link Optional} holding a single check. {@code Optional.empty()} if the check does
    * not exist.
    */
-  Optional<Check> getCheck(CheckKey checkKey) throws OrmException, IOException;
+  Optional<Check> getCheck(CheckKey checkKey) throws OrmException;
 }
diff --git a/java/com/google/gerrit/plugins/checks/db/NoteDbChecks.java b/java/com/google/gerrit/plugins/checks/db/NoteDbChecks.java
index 9b0b085..81779ce 100644
--- a/java/com/google/gerrit/plugins/checks/db/NoteDbChecks.java
+++ b/java/com/google/gerrit/plugins/checks/db/NoteDbChecks.java
@@ -28,7 +28,6 @@
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
-import java.io.IOException;
 import java.util.Optional;
 import java.util.stream.Stream;
 
@@ -51,12 +50,12 @@
 
   @Override
   public ImmutableList<Check> getChecks(Project.NameKey projectName, PatchSet.Id psId)
-      throws OrmException, IOException {
+      throws OrmException {
     return getChecksAsStream(projectName, psId).collect(toImmutableList());
   }
 
   @Override
-  public Optional<Check> getCheck(CheckKey checkKey) throws OrmException, IOException {
+  public Optional<Check> getCheck(CheckKey checkKey) throws OrmException {
     // TODO(gerrit-team): Instead of reading the complete notes map, read just one note.
     return getChecksAsStream(checkKey.project(), checkKey.patchSet())
         .filter(c -> c.key().checkerUuid().equals(checkKey.checkerUuid()))