SONARJAVA-5544 Deprecate rule S6300

Author: dorian-burihabwa-sonarsource

its/autoscan/src/test/java/org/sonar/java/it/AutoScanTest.java

@@ -196,7 +196,7 @@ public void javaCheckTestSources() throws Exception {
     softly.assertThat(newDiffs).containsExactlyInAnyOrderElementsOf(knownDiffs.values());
     softly.assertThat(newTotal).isEqualTo(knownTotal);
     softly.assertThat(rulesCausingFPs).hasSize(9);
-    softly.assertThat(rulesNotReporting).hasSize(11);
+    softly.assertThat(rulesNotReporting).hasSize(10);
 
     /**
      * 4. Check total number of differences (FPs + FNs)

its/autoscan/src/test/resources/autoscan/autoscan-diff-by-rules.json

@@ -2741,12 +2741,6 @@
     "falseNegatives": 0,
     "falsePositives": 0
   },
-  {
-    "ruleKey": "S6300",
-    "hasTruePositives": false,
-    "falseNegatives": 0,
-    "falsePositives": 0
-  },
   {
     "ruleKey": "S6301",
     "hasTruePositives": true,

its/autoscan/src/test/resources/autoscan/diffs/diff_S6300.json

@@ -1,3 +1,4 @@
+<p>This rule is deprecated, and will eventually be removed.</p>
 <p>Storing files locally is a common task for mobile applications. Files that are stored unencrypted can be read out and modified by an attacker with
 physical access to the device. Access to sensitive data can be harmful for the user of the application, for example when the device gets stolen.</p>
 <h2>Ask Yourself Whether</h2>

sonar-java-plugin/src/main/resources/org/sonar/l10n/java/rules/java/S6300.html

@@ -7,15 +7,12 @@
     },
     "attribute": "TRUSTWORTHY"
   },
-  "status": "ready",
+  "status": "deprecated",
   "remediation": {
     "func": "Constant\/Issue",
     "constantCost": "10min"
   },
-  "tags": [
-    "cwe",
-    "android"
-  ],
+  "tags": [],
   "defaultSeverity": "Major",
   "ruleSpecification": "RSPEC-6300",
   "sqKey": "S6300",

sonar-java-plugin/src/main/resources/org/sonar/l10n/java/rules/java/S6300.json

@@ -438,7 +438,6 @@
     "S6263",
     "S6288",
     "S6293",
-    "S6300",
     "S6301",
     "S6326",
     "S6331",