Drop Q= in make options.

Because the `%make_build` macro includes the `V=1`. Note there is no actual
difference of build.log between before and after this commit.

```
$ rpm --eval %make_build
/usr/bin/make -O -j8 V=1 VERBOSE=1
```

ruby.spec

@@ -672,7 +672,7 @@ autoconf
 
 # Q= makes the build output more verbose and allows to check Fedora
 # compiler options.
-%make_build COPY="cp -p" Q=
+%make_build COPY="cp -p"
 
 %install
 rm -rf %{buildroot}