ExternalIdCacheImpl wiring: fix provider methods signatures

so that they compile internally in Google.

Release-Notes: skip
Google-Bug-Id: b/289356238
Change-Id: I2639204c27cf60badfc2584743b3e246f3c30d4f

java/com/google/gerrit/server/account/externalids/storage/notedb/DisabledExternalIdCache.java

diff --git a/java/com/google/gerrit/server/account/externalids/storage/notedb/DisabledExternalIdCache.java b/java/com/google/gerrit/server/account/externalids/storage/notedb/DisabledExternalIdCache.java
index 8525c4b..fd19fcc 100644
--- a/java/com/google/gerrit/server/account/externalids/storage/notedb/DisabledExternalIdCache.java
+++ b/java/com/google/gerrit/server/account/externalids/storage/notedb/DisabledExternalIdCache.java
@@ -37,7 +37,7 @@
 
       @Provides
       @Singleton
-      public static Optional<ExternalIdCacheImpl> provideNoteDbExternalIdCacheImpl() {
+      Optional<ExternalIdCacheImpl> provideNoteDbExternalIdCacheImpl() {
         return Optional.empty();
       }
     };

java/com/google/gerrit/server/account/externalids/storage/notedb/ExternalIdCacheImpl.java

diff --git a/java/com/google/gerrit/server/account/externalids/storage/notedb/ExternalIdCacheImpl.java b/java/com/google/gerrit/server/account/externalids/storage/notedb/ExternalIdCacheImpl.java
index f6ff61c..20c94eb 100644
--- a/java/com/google/gerrit/server/account/externalids/storage/notedb/ExternalIdCacheImpl.java
+++ b/java/com/google/gerrit/server/account/externalids/storage/notedb/ExternalIdCacheImpl.java
@@ -88,7 +88,7 @@
      */
     @Provides
     @Singleton
-    public static Optional<ExternalIdCacheImpl> provideNoteDbExternalIdCacheImpl(
+    Optional<ExternalIdCacheImpl> provideNoteDbExternalIdCacheImpl(
         ExternalIdCacheImpl externalIdCache) {
       return Optional.of(externalIdCache);
     }