remove some instances of dead_code

[github-actions[bot]]

Code size changes for a hello-world Rust program linked with libstd with backtrace:

On platform ubuntu-latest:

• Original binary size: 362,912 B
• Updated binary size: 362,920 B
• Difference: 8 B (0%)

[klensy]

Code size changes for a hello-world Rust program linked with libstd with backtrace:

On platform ubuntu-latest:

* Original binary size: **362,912 B**

* Updated binary size: **362,920 B**

* Difference: **8 B** (0%)

Super weird results.

[klensy]

Anyway, second commit reduces Frame size (for non serde, which is used in std):

print-type-size type: `capture::Frame`: 40 bytes, alignment: 8 bytes
print-type-size     discriminant: 8 bytes
print-type-size     variant `Raw`: 32 bytes
print-type-size         field `.0`: 32 bytes
print-type-size     variant `Deserialized`: 32 bytes
print-type-size         field `.ip`: 8 bytes
print-type-size         field `.symbol_address`: 8 bytes
print-type-size         field `.module_base_address`: 16 bytes

print-type-size type: `capture::Frame`: 32 bytes, alignment: 8 bytes
print-type-size     variant `Raw`: 32 bytes
print-type-size         field `.0`: 32 bytes

[workingjubilee]

Thanks!

I'll take a reduction in the actual data structure size yeah, binary size doesn't matter much.