ci: remove targets

.github/workflows/ci.yml

@@ -21,9 +21,9 @@ jobs:
         with:
           use-cross: true
           command: build
-          args: --verbose --release --target thumbv7em-none-eabihf --features rt,unproven,stm32l432
+          args: --verbose --release --target thumbv7em-none-eabihf
       - name: test
         uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --lib --target x86_64-unknown-linux-gnu --features rt,unproven,stm32l432
\ No newline at end of file
+          args: --lib --target thumbv7em-none-eabihf
\ No newline at end of file