remove observer (#412) #1133

# to view logs

	name: CI

	on:
	merge_group:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	env:
	MIX_ENV: test

	permissions:
	contents: read

	jobs:
	build:
	env:
	RPC_API_HOST: ${{ secrets.RPC_API_HOST }}
	TESTNET_RPC_API_HOST: ${{ secrets.TESTNET_RPC_API_HOST }}
	SEPOLIA_RPC_API_HOST: ${{ secrets.SEPOLIA_RPC_API_HOST }}
	name: Build and test
	runs-on: ubuntu-latest
	services:
	postgres:
	image: postgres:latest
	env:
	POSTGRES_USER: postgres
	POSTGRES_PASSWORD: postgres
	POSTGRES_DB: postgres
	ports:
	- 5432:5432
	options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
	strategy:
	matrix:
	elixir: [1.15]
	otp: [25]
	steps:
	- uses: actions/checkout@v3
	- name: Set up Elixir
	uses: erlef/setup-beam@v1
	with:
	elixir-version: ${{ matrix.elixir }} # Define the elixir version [required]
	otp-version: ${{ matrix.otp }} # Define the OTP version [required]
	env:
	ImageOS: ubuntu20
	- name: Restore dependencies cache
	uses: actions/cache@v3
	with:
	path: server/deps
	key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
	restore-keys: ${{ runner.os }}-mix-
	- name: Install dependencies
	run: mix deps.get
	- name: Check Elixir Formatting
	run: mix format --check-formatted
	- name: Compiles without warnings
	run: mix compile --all-warnings --warnings-as-errors
	- name: Run tests
	run: mix test

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