Remove unnecessary version check from the benchmark build step (#525)

The check is from the time when the MSRV was included in the build matrix.

Author: nickelc

.github/workflows/main.yml

@@ -26,7 +26,6 @@ jobs:
         run: git submodule update --init
 
       - name: Cargo bench
-        if: matrix.version != '1.41.0'
         run: cargo bench --all
         env:
           RUSTFLAGS: --cfg bench