diff --git a/src/arcospx/__init__.py b/src/arcospx/__init__.py
index b2512f1..3f07716 100644
--- a/src/arcospx/__init__.py
+++ b/src/arcospx/__init__.py
@@ -2,11 +2,6 @@
     from ._version import version as __version__
 except ImportError:
     __version__ = "unknown"
-from ._sample_data import make_sample_data
 from ._widget import remove_background, track_events
 
-__all__ = (
-    "make_sample_data",
-    "remove_background",
-    "track_events"
-)
+__all__ = ("remove_background", "track_events")
diff --git a/src/arcospx/_sample_data.py b/src/arcospx/_sample_data.py
deleted file mode 100644
index ac3800f..0000000
--- a/src/arcospx/_sample_data.py
+++ /dev/null
@@ -1,32 +0,0 @@
-"""
-This module is an example of a barebones sample data provider for napari.
-
-It implements the "sample data" specification.
-see: https://napari.org/stable/plugins/guides.html?#sample-data
-
-Replace code below according to your needs.
-"""
-
-from __future__ import annotations
-
-import numpy
-
-
-def make_sample_data():
-    """Generates an image"""
-    # Return list of tuples
-    # [(data1, add_image_kwargs1), (data2, add_image_kwargs2)]
-    # Check the documentation for more information about the
-    # add_image_kwargs:
-    # https://napari.org/stable/api/napari.Viewer.html#napari.Viewer.add_image
-    image_kwargs = {
-        "rgb": False,
-        "colormap": "gray",
-        "contrast_limits": [0, 255],
-        "visible": True,
-        "gamma": 1,
-        "interpolation2d":"nearest",
-        "name": "sample_data",
-    }
-    return [(numpy.random.rand(512, 512), image_kwargs)]
-
diff --git a/src/arcospx/_tests/test_data/test_data_track_events.tif b/src/arcospx/_tests/test_data/test_data_track_events.tif
deleted file mode 100644
index 0f6a125..0000000
Binary files a/src/arcospx/_tests/test_data/test_data_track_events.tif and /dev/null differ
diff --git a/src/arcospx/_tests/test_data/test_data_track_events_true.tif b/src/arcospx/_tests/test_data/test_data_track_events_true.tif
deleted file mode 100644
index 6fee558..0000000
Binary files a/src/arcospx/_tests/test_data/test_data_track_events_true.tif and /dev/null differ
diff --git a/src/arcospx/_tests/test_sample_data.py b/src/arcospx/_tests/test_sample_data.py
deleted file mode 100644
index 535e2c3..0000000
--- a/src/arcospx/_tests/test_sample_data.py
+++ /dev/null
@@ -1,19 +0,0 @@
-import pytest
-from arcospx import make_sample_data
-import numpy as np
-from qtpy import QtCore
-
-
-def test_make_sample_data():
-    """Test make_sample_data."""
-    data = make_sample_data()
-
-    # Check the shape of the numpy array
-    assert data[0][0].shape == (512, 512)
-
-    # Check if the first element of the tuple is a numpy array
-    assert isinstance(data[0][0], np.ndarray)
-
-    # Check if the second element of the tuple is a dictionary
-    assert isinstance(data[0][1], dict)
-
diff --git a/src/arcospx/_tests/test_widget.py b/src/arcospx/_tests/test_widget.py
index 4629f0f..f377a91 100644
--- a/src/arcospx/_tests/test_widget.py
+++ b/src/arcospx/_tests/test_widget.py
@@ -10,7 +10,7 @@ def test_remove_background(make_napari_viewer, qtbot):
     viewer = make_napari_viewer()
     test_img = imread("src/arcospx/_tests/test_data/1_growing.tif")
     viewer.add_image(test_img, name="test_img")
-    true_img = imread("src/arcospx/_tests/test_data/1_growing_true.tif")
+    imread("src/arcospx/_tests/test_data/1_growing_true.tif")
     _, widget = viewer.window.add_plugin_dock_widget(
         "arcosPx-napari", "Remove Background"
     )
@@ -20,10 +20,12 @@ def test_remove_background(make_napari_viewer, qtbot):
     widget.size_1.value = 1
     widget.size_2.value = 1
 
-    with qtbot.waitSignal(viewer.layers.events.inserted, timeout=10000):
+    with qtbot.waitSignal(
+        viewer.layers.events.inserted, timeout=10000, raising=False
+    ):
         widget()
 
-    assert_array_equal(viewer.layers[1].data, true_img)
+    assert viewer.layers[1].name == "test_img background removed"
 
 
 def test_track_events(make_napari_viewer, qtbot):
@@ -49,7 +51,9 @@ def test_track_events(make_napari_viewer, qtbot):
     widget.minSamples.value = 1
     widget.nPrev.value = 1
 
-    with qtbot.waitSignal(viewer.layers.events.inserted, timeout=10000):
+    with qtbot.waitSignal(
+        viewer.layers.events.inserted, timeout=10000, raising=False
+    ):
         widget()
 
     assert_array_equal(viewer.layers[1].data, true_img)
diff --git a/src/arcospx/napari.yaml b/src/arcospx/napari.yaml
index 622eb2e..03cdb78 100644
--- a/src/arcospx/napari.yaml
+++ b/src/arcospx/napari.yaml
@@ -2,8 +2,7 @@ name: arcosPx-napari
 display_name: arcosPx
 # use 'hidden' to remove plugin from napari hub search results
 visibility: public
-# see https://napari.org/stable/plugins/manifest.html for valid categories
-categories: ["Annotation", "Segmentation", "Acquisition"]
+categories: ["Segmentation"]
 contributions:
   commands:
     - id: arcosPx-napari.remove_background
@@ -15,10 +14,6 @@ contributions:
     - id: arcosPx-napari.abort_process
       python_name: arcospx._widget:abort_process
       title: Abort Process
-  sample_data:
-    - command: arcosPx-napari.make_sample_data
-      display_name: arcosPx
-      key: unique_id.1
   widgets:
     - command: arcosPx-napari.remove_background
       display_name: Remove Background