gitlab-ci: Do not cache rustfmt and clippy stuff.

.gitlab-ci.yml

@@ -51,10 +51,6 @@ rustfmt:
   - rustc --version && cargo --version
   - cargo install rustfmt-nightly --force
   - cargo fmt --all -- --write-mode=diff
-  cache:
-      paths:
-        - target/
-        - cargo/
 
 # Configure and run clippy on nightly
 # Only fails on errors atm.
@@ -65,7 +61,3 @@ clippy:
   - rustc --version && cargo --version
   - cargo install clippy --force
   - cargo clippy --all
-  cache:
-      paths:
-        - target/
-        - cargo/