Drop retained regexes

[ericproulx]

I removed the code that retain regexes in Route and Any classes since its union.

# Based on our app
# 1.3.1
Total allocated: 41885240 bytes (308172 objects)
Total retained:  6000260 bytes (11806 objects)

#next version
Total allocated: 41851936 bytes (305115 objects)
Total retained:  3419455 bytes (8907 objects)

Almost half total retained :)

[grape-bot]

	1 Warning
⚠️	There’re library changes, but not tests. That’s OK as long as you’re refactoring existing code.

Generated by 🚫 danger

[dblock]

We usually keep those.

[dblock]

I encourage you to write a blog post somewhere about the optimizations in Grape! If you don't have a venue I would be happy to host on code.dblock.org.

[ericproulx]

I encourage you to write a blog post somewhere about the optimizations in Grape! If you don't have a venue I would be happy to host on code.dblock.org.

Thanks that would be great. I'll let you know.