Reduce the size of tests for bug #1285 (#5561)

As best I can tell the bug happens due to stuff happening _before_ the
user code. So I have removed anything after the user code (ie the giant
gob of dwarf debug info and symbols), in an attempt to reduce the test
sizes in general.

I manually undid the fix from #1285 and the tests correctly fail with
this reduced input.

test/filter-tests.js

@@ -34,7 +34,7 @@ import {AsmParser} from '../lib/parsers/asm-parser.js';
 
 import {fs, resolvePathFromTestRoot} from './utils.js';
 
-approvals.mocha(resolvePathFromTestRoot('filter-cases'));
+approvals.mocha(resolvePathFromTestRoot('filters-cases'));
 
 function processAsm(filename, filters) {
     const file = fs.readFileSync(filename, 'utf8');