build: use a static .tiff for macOS .dmg over generating

Co-authored-by: Pavol Rusnak <pavol@rusnak.io>

doc/build-osx.md

@@ -35,7 +35,6 @@ The following dependencies are **optional** packages required for deploying:
 
 Library                                             | Purpose          | Description
 ----------------------------------------------------|------------------|----------------------
-[librsvg](https://formulae.brew.sh/formula/librsvg) | Deploy Dependency| Library to render SVG files
 [ds_store](https://pypi.org/project/ds-store/)      | Deploy Dependency| Examine and modify .DS_Store files
 [mac_alias](https://pypi.org/project/mac-alias/)    | Deploy Dependency| Generate/Read binary alias and bookmark records
 
@@ -218,10 +217,6 @@ This command depends on a couple of python packages, so it is required that you
 
 Ensuring that `python` is installed, you can install the deploy dependencies by running the following commands in your terminal:
 
-``` bash
-brew install librsvg
-```
-
 ``` bash
 pip3 install ds_store mac_alias
 ```