Remove cache clearing from static-checker

[ijjk]

Clearing the cache can cause unintended side effects with specific modules, it can also slow down the process of requiring pages.

This was originally intended to prevent an out-of-memory OOM error inside of a static check worker although worker-farm should spin up a new worker in the event of an OOM.

Fixes: #7894

[ijjk]

Stats from current PR

Click to expand stats

	zeit/next.js canary	ijjk/next.js fix-firebase-cache-clear	Change
Build Duration	22.8s	22.2s	-613ms
node_modules Size	43.6 MB	43.6 MB	-656 B
Total Bundle (main, webpack, commons) Size	206 kB	206 kB	✓
Total Bundle (main, webpack, commons) gzip Size	68.2 kB	68.2 kB	✓
Total Bundle (main, webpack, commons) Modern Size	181 kB	181 kB	✓
Total Bundle (main, webpack, commons) Modern gzip Size	59.9 kB	59.9 kB	✓
Client _app Size	2.39 kB	2.39 kB	✓
Client _app gzip Size	1.08 kB	1.08 kB	✓
Client _app Modern Size	1.83 kB	1.83 kB	✓
Client _app gzip Modern Size	890 B	890 B	✓
Client _error Size	8.22 kB	8.22 kB	✓
Client _error gzip Size	3.16 kB	3.16 kB	✓
Client _error Modern Size	5.85 kB	5.85 kB	✓
Client _error gzip Modern Size	2.33 kB	2.33 kB	✓
Client pages/index Size	343 B	343 B	✓
Client pages/index gzip Size	246 B	246 B	✓
Client pages/index Modern Size	319 B	319 B	✓
Client pages/index gzip Modern Size	254 B	254 B	✓
Client pages/link Size	4.18 kB	4.18 kB	✓
Client pages/link gzip Size	1.82 kB	1.82 kB	✓
Client pages/link Modern Size	3.81 kB	3.81 kB	✓
Client pages/link gzip Modern Size	1.72 kB	1.72 kB	✓
Client pages/routerDirect Size	423 B	423 B	✓
Client pages/routerDirect gzip Size	306 B	306 B	✓
Client pages/routerDirect Modern Size	411 B	411 B	✓
Client pages/routerDirect gzip Modern Size	314 B	314 B	✓
Client pages/withRouter Size	435 B	435 B	✓
Client pages/withRouter gzip Size	301 B	301 B	✓
Client pages/withRouter Modern Size	423 B	423 B	✓
Client pages/withRouter gzip Modern Size	309 B	309 B	✓
Client main Size	15.6 kB	15.6 kB	✓
Client main gzip Size	5.5 kB	5.5 kB	✓
Client main Modern Size	12.4 kB	12.4 kB	✓
Client main Modern gzip Size	4.78 kB	4.78 kB	✓
Client commons Size	188 kB	188 kB	✓
Client commons gzip Size	61.3 kB	61.3 kB	✓
Client commons Modern Size	169 kB	169 kB	✓
Client commons Modern gzip Size	55.1 kB	55.1 kB	✓
Client webpack Size	1.53 kB	1.53 kB	✓
Client webpack gzip Size	778 B	778 B	✓
Client webpack Modern Size	1.53 kB	1.53 kB	✓
Client webpack Modern gzip Size	785 B	785 B	✓
Base Rendered Size	2.76 kB	2.76 kB	✓
Build Dir Size	1.39 MB	1.39 MB	✓

Click to expand serverless stats

	zeit/next.js canary	ijjk/next.js fix-firebase-cache-clear	Change
Build Duration	23.4s	23.5s	⚠️ +52ms
node_modules Size	43.6 MB	43.6 MB	-656 B
Total Bundle (main, webpack, commons) Size	206 kB	206 kB	✓
Total Bundle (main, webpack, commons) gzip Size	68.2 kB	68.2 kB	✓
Total Bundle (main, webpack, commons) Modern Size	181 kB	181 kB	✓
Total Bundle (main, webpack, commons) Modern gzip Size	59.9 kB	59.9 kB	✓
Client _app Size	2.39 kB	2.39 kB	✓
Client _app gzip Size	1.08 kB	1.08 kB	✓
Client _app Modern Size	1.83 kB	1.83 kB	✓
Client _app gzip Modern Size	890 B	890 B	✓
Client _error Size	8.22 kB	8.22 kB	✓
Client _error gzip Size	3.16 kB	3.16 kB	✓
Client _error Modern Size	5.85 kB	5.85 kB	✓
Client _error gzip Modern Size	2.33 kB	2.33 kB	✓
Client pages/index Size	343 B	343 B	✓
Client pages/index gzip Size	246 B	246 B	✓
Client pages/index Modern Size	319 B	319 B	✓
Client pages/index gzip Modern Size	254 B	254 B	✓
Client pages/link Size	4.18 kB	4.18 kB	✓
Client pages/link gzip Size	1.82 kB	1.82 kB	✓
Client pages/link Modern Size	3.81 kB	3.81 kB	✓
Client pages/link gzip Modern Size	1.72 kB	1.72 kB	✓
Client pages/routerDirect Size	423 B	423 B	✓
Client pages/routerDirect gzip Size	306 B	306 B	✓
Client pages/routerDirect Modern Size	411 B	411 B	✓
Client pages/routerDirect gzip Modern Size	314 B	314 B	✓
Client pages/withRouter Size	435 B	435 B	✓
Client pages/withRouter gzip Size	300 B	300 B	✓
Client pages/withRouter Modern Size	423 B	423 B	✓
Client pages/withRouter gzip Modern Size	309 B	309 B	✓
Client main Size	15.6 kB	15.6 kB	✓
Client main gzip Size	5.5 kB	5.5 kB	✓
Client main Modern Size	12.4 kB	12.4 kB	✓
Client main Modern gzip Size	4.78 kB	4.78 kB	✓
Client commons Size	188 kB	188 kB	✓
Client commons gzip Size	61.3 kB	61.3 kB	✓
Client commons Modern Size	169 kB	169 kB	✓
Client commons Modern gzip Size	55.1 kB	55.1 kB	✓
Client webpack Size	1.53 kB	1.53 kB	✓
Client webpack gzip Size	778 B	778 B	✓
Client webpack Modern Size	1.53 kB	1.53 kB	✓
Client webpack Modern gzip Size	785 B	785 B	✓
Serverless pages/link Size	255 kB	255 kB	✓
Serverless pages/link gzip Size	68.6 kB	68.6 kB	-1 B
Serverless pages/index Size	248 kB	248 kB	✓
Serverless pages/index gzip Size	66.4 kB	66.4 kB	✓
Serverless pages/_error Size	247 kB	247 kB	✓
Serverless pages/_error gzip Size	66.1 kB	66.1 kB	✓
Serverless pages/routerDirect Size	248 kB	248 kB	✓
Serverless pages/routerDirect gzip Size	66.3 kB	66.3 kB	✓
Serverless pages/withRouter Size	248 kB	248 kB	✓
Serverless pages/withRouter gzip Size	66.4 kB	66.4 kB	✓
Build Dir Size	2.6 MB	2.6 MB	✓