remove yarn support (#242)

Author: m2rads

README.md

@@ -26,8 +26,6 @@ If helpful, [here's a short video](https://github.com/anti-work/shortest/issues/
 npm install -D @antiwork/shortest
 # or
 pnpm add -D @antiwork/shortest
-# or
-yarn add -D @antiwork/shortest
 ```
 
 Add `.shortest/` to your `.gitignore` (where Shortest stores screenshots of each test run):
@@ -41,8 +39,6 @@ Run tests:
 npx shortest
 # or
 pnpm shortest
-# or
-yarn shortest
 ```
 
 ### Quick start

packages/shortest/README.md

@@ -13,8 +13,6 @@ AI-powered natural language end-to-end testing framework.
 npm install -D @antiwork/shortest
 # or
 pnpm add -D @antiwork/shortest
-# or
-yarn add -D @antiwork/shortest
 ```
 
 Add `.shortest/` to your `.gitignore` (where Shortest stores screenshots of each test run):
@@ -120,7 +118,6 @@ shortest --headless        # Run in headless mode using cli
 ```bash
 npx shortest    # for npm
 pnpm shortest   # for pnpm
-yarn shortest   # for yarn
 ```
 
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