cleanup: have_static_innodb.inc

and remove unused files

mysql-test/include/have_not_innodb_plugin.inc

-disable_query_log;
---require r/not_true.require
-select (PLUGIN_LIBRARY LIKE 'ha_innodb_plugin%' OR PLUGIN_DESCRIPTION LIKE '%xtradb%') as `TRUE` from information_schema.plugins where PLUGIN_NAME='InnoDB';
-enable_query_log;

mysql-test/include/have_static_innodb.inc

+source include/have_innodb.inc;
+
+if (!`select count(*) from information_schema.plugins
+         where plugin_name = 'innodb' and plugin_status = 'active' and
+              plugin_library is null`) {
+  skip Need compiled-in InnoDB;
+}

mysql-test/r/not_true.require

-TRUE
-NULL

mysql-test/t/plugin_innodb.test

 --source include/not_embedded.inc
 --source include/have_example_plugin.inc
---source include/have_innodb.inc
-
-if (!`select count(*) from information_schema.plugins
-         where plugin_name = 'innodb' and plugin_status = 'active' and
-              plugin_library is null`) {
-  skip Need compiled-in InnoDB;
-}
-
+--source include/have_static_innodb.inc
 
 --replace_regex /\.dll/.so/
 eval install plugin example soname '$HA_EXAMPLE_SO';