ci: Remove rustfmt requirement

Author: stevenroose

.github/workflows/rust.yml

@@ -10,14 +10,8 @@ jobs:
             matrix:
                 include:
                     - rust: stable
-                      env:
-                          RUSTFMTCHK: true
                     - rust: nightly
-                      env:
-                          RUSTFMTCHK: false
                     - rust: 1.41.1
-                      env:
-                          RUSTFMTCHK: false
         steps:
             - name: Checkout Crate
               uses: actions/checkout@v2
@@ -29,7 +23,6 @@ jobs:
                   override: true
             - run: cargo update -p serde --precise 1.0.152
             - name: Running test script
-              env: ${{ matrix.env }}
               run: ./contrib/test.sh
 
     integrations-tests:

contrib/test.sh

@@ -2,15 +2,9 @@
 set -xe
 
 # Just echo all the relevant env vars to help debug Travis.
-echo "RUSTFMTCHECK: \"$RUSTFMTCHECK\""
 echo "BITCOINVERSION: \"$BITCOINVERSION\""
 echo "PATH: \"$PATH\""
 
-if [ -n "$RUSTFMTCHECK" ]; then
-  rustup component add rustfmt
-  cargo fmt --all -- --check
-fi
-
 # Integration test.
 if [ -n "$BITCOINVERSION" ]; then
     wget https://bitcoincore.org/bin/bitcoin-core-$BITCOINVERSION/bitcoin-$BITCOINVERSION-x86_64-linux-gnu.tar.gz