Remove lfs filters

Add the watermark png back into the repo and remove the wget step
from the Colab notebooks.

.gitattributes

@@ -1,10 +0,0 @@
-# Auto detect text files and perform LF normalization
-* text=auto
-*.jpg filter=lfs diff=lfs merge=lfs -text
-*.jpeg filter=lfs diff=lfs merge=lfs -text
-*.JPG filter=lfs diff=lfs merge=lfs -text
-*.JPEG filter=lfs diff=lfs merge=lfs -text
-*.PNG filter=lfs diff=lfs merge=lfs -text
-*.png filter=lfs diff=lfs merge=lfs -text
-*.h5 filter=lfs diff=lfs merge=lfs -text
-*.H5 filter=lfs diff=lfs merge=lfs -text

ImageColorizerColab.ipynb

@@ -159,15 +159,6 @@
     "!wget https://data.deepai.org/deoldify/ColorizeArtistic_gen.pth -O ./models/ColorizeArtistic_gen.pth"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "!wget https://media.githubusercontent.com/media/jantic/DeOldify/master/resource_images/watermark.png -O ./resource_images/watermark.png"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,

ImageColorizerColabStable.ipynb

@@ -159,15 +159,6 @@
     "!wget https://www.dropbox.com/s/usf7uifrctqw9rl/ColorizeStable_gen.pth?dl=0 -O ./models/ColorizeStable_gen.pth"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "!wget https://media.githubusercontent.com/media/jantic/DeOldify/master/resource_images/watermark.png -O ./resource_images/watermark.png"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,

VideoColorizerColab.ipynb

@@ -166,15 +166,6 @@
     "!wget https://data.deepai.org/deoldify/ColorizeVideo_gen.pth -O ./models/ColorizeVideo_gen.pth"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "!wget https://media.githubusercontent.com/media/jantic/DeOldify/master/resource_images/watermark.png -O ./resource_images/watermark.png"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,