[APM] Prevent console.error causing unit tests to fail locally (elast…

…ic#161959)

elastic#161636 fixed a couple of unit
tests that were failing locally but passing on CI. This PR should
prevent this from happening again.

**Why they failed locally and not on CI??**
Locally `console.error` is treated as a test failure:

https://github.com/elastic/kibana/blob/7ea0dd6b116a93024d68ea2d93fa4ce90e9bf189/x-pack/plugins/apm/jest_setup.js#L12-L15

Whereas on CI `console.*` is disabled:

https://github.com/elastic/kibana/blob/a78c7b02b3b825826f39289e91e545ee6f4a67d9/packages/kbn-test/src/jest/setup/disable_console_logs.js#L9-L12

This means that if a test logs `console.error` it would fail locally but
not on CI. This PR changes that so console.error will not cause unit
tests to fail anywhere.

x-pack/plugins/apm/jest.config.js

@@ -11,10 +11,7 @@ module.exports = {
   preset: '@kbn/test',
   rootDir: path.resolve(__dirname, '../../..'),
   roots: ['<rootDir>/x-pack/plugins/apm'],
-  setupFiles: [
-    '<rootDir>/x-pack/plugins/apm/jest_setup.js',
-    '<rootDir>/x-pack/plugins/apm/.storybook/jest_setup.js',
-  ],
+  setupFiles: ['<rootDir>/x-pack/plugins/apm/.storybook/jest_setup.js'],
   coverageDirectory: '<rootDir>/target/kibana-coverage/jest/x-pack/plugins/apm',
   coverageReporters: ['text', 'html'],
   collectCoverageFrom: [