chore: tests: remove unreachable match arms from execution.rs tests

[carneiro-cw]

No description provided.

[gabriel-aranha-cw]

Final benchmark:
Run ID: bench-455570277

Git Info:

• Branch: main
• Commit: 5ac02a2
• PR: chore: tests: remove unreachable match arms from execution.rs tests #2037

Configuration:

• Target Account Strategy: Default

Leader Stats:
RPS Stats: Max: 2049.00, Min: 1285.00, Avg: 1877.79, StdDev: 76.25
TPS Stats: Max: 2059.00, Min: 1655.00, Avg: 1822.88, StdDev: 89.06

Follower Stats:
Imported Blocks/s: Max: 2.00, Min: 1.00, Avg: 1.58, StdDev: 0.49
Imported Transactions/s: Max: 4056.00, Min: 1131.00, Avg: 2958.83, StdDev: 937.60

Plots:

• View Leader Plot
• View Follower Plot