Removal all references to ReviewDb

ReviewDb does not exist anymore on Gerrit master,
remove any references to it as they are misleading.

Change-Id: Ic3dff4ce02a96d792d34b197bfb58ad246123bac

src/main/resources/Documentation/config.md

diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index d1f39c6..0a9fa22 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -19,11 +19,6 @@
     "elapsed": 20,
     "result": "passed"
   },
-  "reviewdb": {
-    "ts": 139402910202,
-    "elapsed": 50,
-    "result": "passed"
-  },
   "projectslist": {
     "ts": 139402910202,
     "elapsed": 100,
@@ -50,7 +45,6 @@
 The following check names are available:
 
 - `querychanges`: check the ability to query changes
-- `reviewdb` : check connectivity and ability to query ReviewDb
 - `jgit` : check connectivity to the filesystem and ability to open a JGit ref and object
 - `projectslist` : check the ability to list projects with their descriptions
 
@@ -75,4 +69,4 @@
    Multiple occurrences are allowed to configure more projects, in addition
    to the default ones that are always included.
 
-  Default: All-Projects, All-Users
\ No newline at end of file
+  Default: All-Projects, All-Users

src/resources/Documentation/config.md

diff --git a/src/resources/Documentation/config.md b/src/resources/Documentation/config.md
index ea51c10..aa59c29 100644
--- a/src/resources/Documentation/config.md
+++ b/src/resources/Documentation/config.md
@@ -48,9 +48,6 @@
 # TYPE plugins_healthcheck_projectslist_latest_measured_latency gauge
 plugins_healthcheck_projectslist_latest_measured_latency 5.0
 
-# HELP plugins_healthcheck_reviewdb_latest_measured_latency Generated from Dropwizard metric import (metric=plugins/healthcheck/reviewdb/latency, type=com.google.gerrit.metrics.dropwizard.CallbackMetricImpl0$1)
-# TYPE plugins_healthcheck_reviewdb_latest_measured_latency gauge
-plugins_healthcheck_reviewdb_latest_measured_latency 3.0
 
 # HELP plugins_healthcheck_jgit_failure_total Generated from Dropwizard metric import (metric=plugins/healthcheck/jgit/failure, type=com.codahale.metrics.Meter)
 # TYPE plugins_healthcheck_jgit_failure_total counter
@@ -59,10 +56,6 @@
 # HELP plugins_healthcheck_projectslist_failure_total Generated from Dropwizard metric import (metric=plugins/healthcheck/projectslist/failure, type=com.codahale.metrics.Meter)
 # TYPE plugins_healthcheck_projectslist_failure_total counter
 plugins_healthcheck_projectslist_failure_total 0.0
-
-# HELP plugins_healthcheck_reviewdb_failure_total Generated from Dropwizard metric import (metric=plugins/healthcheck/reviewdb/failure, type=com.codahale.metrics.Meter)
-# TYPE plugins_healthcheck_reviewdb_failure_total counter
-plugins_healthcheck_reviewdb_failure_total 0.0
 ```
 
 Metrics will be exposed to prometheus by the [metrics-reporter-prometheus](https://gerrit.googlesource.com/plugins/metrics-reporter-prometheus/) plugin.

src/test/java/com/googlesource/gerrit/plugins/healthcheck/JGitHealthCheckTest.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/healthcheck/JGitHealthCheckTest.java b/src/test/java/com/googlesource/gerrit/plugins/healthcheck/JGitHealthCheckTest.java
index 1a8ec63..59dfd71 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/healthcheck/JGitHealthCheckTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/healthcheck/JGitHealthCheckTest.java
@@ -67,9 +67,9 @@
 
   @Test
   public void shouldBeHealthyWhenJGitIsWorking() {
-    JGitHealthCheck reviewDbCheck =
+    JGitHealthCheck check =
         new JGitHealthCheck(executor, DEFAULT_CONFIG, getWorkingRepositoryManager());
-    assertThat(reviewDbCheck.run().result).isEqualTo(Result.PASSED);
+    assertThat(check.run().result).isEqualTo(Result.PASSED);
   }
 
   @Test