Remove deprecated methods (#323)

## Description

Remove deprecated methods for next release

## Type of Change

Please delete options that are not relevant.

* Update (Update version or update existing automation)

## Checklist

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit/integration tests pass locally with my
changes

Signed-off-by: David Kornel <kornys@outlook.com>

Author: kornys

test-frame-common/src/main/java/io/skodjob/testframe/resources/KubeResourceManager.java

@@ -126,16 +126,6 @@ public static KubeResourceManager get() {
         return INSTANCE;
     }
 
-    /**
-     * Gets KubeResourceManager instance
-     *
-     * @return singleton instance
-     */
-    @Deprecated(since = "0.9.0")
-    public static KubeResourceManager getInstance() {
-        return get();
-    }
-
     /**
      * Set the active context for this thread and auto‑restore on close.
      *
@@ -559,35 +549,6 @@ public final <T extends HasMetadata> void deleteResourceWithoutWait(T... resourc
         deleteResource(false, false, resources);
     }
 
-    /**
-     * @deprecated as of release 0.13.0, use {@link #deleteResourceAsyncWait(HasMetadata[])} instead.
-     *
-     * Deletes resources.
-     *
-     * @param resources The resources to delete.
-     * @param <T>       The type of the resources.
-     */
-    @SafeVarargs
-    @Deprecated(since = "0.13.0")
-    public final <T extends HasMetadata> void deleteResource(T... resources) {
-        deleteResource(true, resources);
-    }
-
-    /**
-     * @deprecated as of release 0.13.0, use {@link #deleteResourceWithWait(HasMetadata[])} instead.
-     *
-     * Deletes resources.
-     *
-     * @param async     Enables async deletion
-     * @param resources The resources to delete.
-     * @param <T>       The type of the resources.
-     */
-    @SafeVarargs
-    @Deprecated(since = "0.13.0")
-    public final <T extends HasMetadata> void deleteResource(boolean async, T... resources) {
-        deleteResource(async, true, resources);
-    }
-
     /**
      * Deletes resources.
      *