Remove Method of zero_like_rdata_from_type

[willtebbutt]

I'm opening this as an easy way to run the entire test suite to see what fails when I remove this. Do not merge.

update: this actually can be merged -- it looks like these method were redundant. They don't make any sense anyway because a TypeVar is not a type, so they really ought not to exist. I'll update, bump the patch, and merge when CI passes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
src/interpreter/zero_like_rdata.jl	100.00% <ø> (ø)

[github-actions]

Performance Ratio:
Ratio of time to compute gradient and time to compute function.
Warning: results are very approximate! See here for more context.

┌────────────────────────────┬──────────┬─────────┬─────────────┬─────────┐
│                      Label │ Mooncake │  Zygote │ ReverseDiff │  Enzyme │
│                     String │   String │  String │      String │  String │
├────────────────────────────┼──────────┼─────────┼─────────────┼─────────┤
│                   sum_1000 │    116.0 │     1.0 │         5.1 │     1.9 │
│                  _sum_1000 │     7.97 │  1430.0 │        40.3 │   0.126 │
│               sum_sin_1000 │    0.917 │   0.581 │         4.2 │    0.37 │
│              _sum_sin_1000 │     1.23 │   129.0 │        7.37 │   0.602 │
│                   kron_sum │     60.6 │    10.1 │       195.0 │    11.4 │
│              kron_view_sum │     81.5 │    11.3 │       212.0 │    12.4 │
│      naive_map_sin_cos_exp │     2.41 │ missing │        7.38 │    2.15 │
│            map_sin_cos_exp │     4.79 │    1.73 │        7.57 │    3.14 │
│      broadcast_sin_cos_exp │     4.23 │    2.56 │        1.68 │    2.84 │
│                 simple_mlp │     8.48 │    3.26 │        12.6 │    3.32 │
│                     gp_lml │     17.0 │    6.62 │     missing │ missing │
│ turing_broadcast_benchmark │     7.16 │ missing │        31.2 │ missing │
│         large_single_block │     3.81 │  4340.0 │        30.1 │    2.17 │
└────────────────────────────┴──────────┴─────────┴─────────────┴─────────┘

[willtebbutt]

It looks like this actually could be merged. I'll do so once #254 has been merged in.