misc: Run pre-commit run on all files in repo

The following command was run:

```
pre-commit run --all-files
```

This ensures all the files in the repository are formatted to pass our
checks.

Change-Id: Ia2fe3529a50ad925d1076a612d60a4280adc40de
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/62572
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>

util/m5/README.md

@@ -410,5 +410,3 @@ subtley broken, when used to target a different ABI. To build these objects
 correctly, we would need to use a proper cross build environment for their
 corresponding languages. Something like this could likely be set up using a
 tool like buildroot.
-
-

util/m5/src/java/gem5/ops.cc

@@ -327,4 +327,3 @@ Java_gem5_Ops_work_1end(JNIEnv *env, jobject obj,
 {
     getDispatchTable(env, obj)->m5_work_end(j_workid, j_threadid);
 }
-