[ZEPPELIN-1489] Remove jdbc-like interpreter example properties and improve JDBC docs

jdbc/src/main/java/org/apache/zeppelin/jdbc/JDBCInterpreter.java

@@ -49,7 +49,7 @@
 
 /**
  * JDBC interpreter for Zeppelin. This interpreter can also be used for accessing HAWQ,
- * GreenplumDB, MariaDB, MySQL, Postgres and Redshit.
+ * GreenplumDB, MariaDB, MySQL, Postgres and Redshift.
  *
  * <ul>
  * <li>{@code default.url} - JDBC URL to connect to.</li>

jdbc/src/main/resources/interpreter-setting.json

@@ -63,96 +63,6 @@
         "propertyName": "zeppelin.jdbc.principal",
         "defaultValue": "",
         "description": "Kerberos principal"
-      },
-      "hive.url": {
-        "envName": null,
-        "propertyName": "hive.url",
-        "defaultValue": "jdbc:hive2://localhost:10000",
-        "description": ""
-      },
-      "hive.user": {
-        "envName": null,
-        "propertyName": "hive.user",
-        "defaultValue": "hive",
-        "description": ""
-      },
-      "hive.password": {
-        "envName": null,
-        "propertyName": "hive.password",
-        "defaultValue": "",
-        "description": ""
-      },
-      "hive.driver": {
-        "envName": null,
-        "propertyName": "hive.driver",
-        "defaultValue": "org.apache.hive.jdbc.HiveDriver",
-        "description": ""
-      },
-      "phoenix.url": {
-        "envName": null,
-        "propertyName": "phoenix.url",
-        "defaultValue": "jdbc:phoenix:localhost:2181:/hbase-unsecure",
-        "description": ""
-      },
-      "phoenix.user": {
-        "envName": null,
-        "propertyName": "phoenix.user",
-        "defaultValue": "phoenixuser",
-        "description": ""
-      },
-      "phoenix.password": {
-        "envName": null,
-        "propertyName": "phoenix.password",
-        "defaultValue": "",
-        "description": ""
-      },
-      "phoenix.driver": {
-        "envName": null,
-        "propertyName": "phoenix.driver",
-        "defaultValue": "org.apache.phoenix.jdbc.PhoenixDriver",
-        "description": ""
-      },
-      "phoenix.hbase.client.retries.number": {
-        "envName": null,
-        "propertyName": "phoenix.hbase.client.retries.number",
-        "defaultValue": "1",
-        "description": "Maximum retries.  Used as maximum for all retryable operations such as the getting of a cell's value, starting a row update, etc."
-      },
-      "tajo.url": {
-        "envName": null,
-        "propertyName": "tajo.url",
-        "defaultValue": "jdbc:tajo://localhost:26002/default",
-        "description": ""
-      },
-      "tajo.driver": {
-        "envName": null,
-        "propertyName": "tajo.driver",
-        "defaultValue": "org.apache.tajo.jdbc.TajoDriver",
-        "description": ""
-      },
-      "psql.url": {
-        "envName": null,
-        "propertyName": "psql.url",
-        "defaultValue": "jdbc:postgresql://localhost:5432/",
-        "description": ""
-      },
-      "psql.user": {
-        "envName": null,
-        "propertyName": "psql.user",
-        "defaultValue": "phoenixuser",
-        "description": ""
-      },
-      "psql.password": {
-        "envName": null,
-        "propertyName": "psql.password",
-        "defaultValue": "",
-        "description": ""
-      },
-      "psql.driver": {
-        "envName": null,
-        "propertyName": "psql.driver",
-        "defaultValue": "org.postgresql.Driver",
-        "description": ""
       }
     },
     "editor": {