Remove old migrations

[RomarQ]

What does it do?

Removes old migrations.

[github-actions]

WASM runtime size check:

Compared to target branch

Moonbase runtime: 2260 KB (no changes) ✅

Moonbeam runtime: 2248 KB (no changes) ✅

Moonriver runtime: 2240 KB (no changes) ✅

Compared to latest release (runtime-3300)

Moonbase runtime: 2260 KB (+232 KB compared to latest release) ⚠️

Moonbeam runtime: 2248 KB (+252 KB compared to latest release) ⚠️

Moonriver runtime: 2240 KB (+248 KB compared to latest release) ⚠️

[github-actions]

Coverage Report

@@                      Coverage Diff                      @@
##           master   rq/remove-old-migrations2      +/-   ##
=============================================================
+ Coverage   74.39%                      74.58%   +0.19%     
  Files         375                         375              
- Lines       95766                       95682      -84     
=============================================================
+ Hits        71241                       71356     +115     
- Misses      24525                       24326     -199     

Files Changed	Coverage
/client/rpc/dev/src/lib.rs	89.16% (+32.53%)	🔼
/client/rpc/finality/src/lib.rs	81.25% (+68.75%)	🔼
/client/rpc/txpool/src/lib.rs	65.38% (+11.53%)	🔼
/client/rpc-core/txpool/src/types/content.rs	70.37% (+70.37%)	🔼
/client/rpc-core/txpool/src/types/inspect.rs	92.31% (+3.85%)	🔼
/runtime/common/src/migrations.rs	98.03% (+31.93%)	🔼

Coverage generated Wed Dec 4 11:48:10 UTC 2024