remove rustc and cargo installed by apt.

.github/workflows/deb.yml

@@ -4,7 +4,7 @@ on:
   push:
     branches:
       - master
-      - ci
+      - fix-cryptography
 
 jobs:
   build:
@@ -43,7 +43,7 @@ jobs:
             apt-get update -q -y
 
             # Install Python, fpm deps (ruby) and the kitchen sink required to build everything...
-            apt-get install -q -y git python3 python3-venv python3-dev python3-pip build-essential libffi-dev libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev libgdbm-dev libc6-dev libbz2-dev rustc cargo squashfs-tools ruby-full jq libpq-dev postgresql postgresql-contrib
+            apt-get install -q -y git python3 python3-venv python3-dev python3-pip build-essential libffi-dev libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev libgdbm-dev libc6-dev libbz2-dev squashfs-tools ruby-full jq libpq-dev postgresql postgresql-contrib
 
             # these dependencies are installed for compiling cryptography
             apt-get install -q -y curl libssl-dev pkg-config