ci: fix tests & praise be linters

Signed-off-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>

Author: georglauterbach

.github/workflows/testing.yml

@@ -9,7 +9,7 @@ on: # yamllint disable-line rule:truthy
       - test/**
       - .github/workflows
   push:
-    branches: [main]
+    branches: [ main ]
     paths:
       - src/**
       - test/**

test/lang-rust/ubuntu2404-basics.sh

@@ -5,8 +5,6 @@ shopt -s inherit_errexit
 
 source lib.sh
 
-file_exists "${DATA_BASE_DIR}/rust/rustup/home/rustup-init"
-
 command_exists_not rustup
 command_exists_not rustc
 command_exists_not cargo