Remove node log testing from E2E framework

[cmichi]

Removing the node_log_contains command for the reasons outlined in #1423.

[codecov-commenter]

Codecov Report

Merging #1443 (992f34d) into master (4f0c88b) will decrease coverage by 7.21%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1443      +/-   ##
==========================================
- Coverage   70.64%   63.43%   -7.22%     
==========================================
  Files         194      194              
  Lines        6095     6080      -15     
==========================================
- Hits         4306     3857     -449     
- Misses       1789     2223     +434     

Impacted Files	Coverage Δ
crates/e2e/macro/src/codegen.rs	0.00% <ø> (ø)
crates/e2e/macro/src/lib.rs	0.00% <ø> (ø)
crates/e2e/macro/src/config.rs	57.89% <100.00%> (+7.89%)	⬆️
crates/ink/ir/src/ir/contract.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/ink/ir/src/ir/ink_test.rs	0.00% <0.00%> (-87.50%)	⬇️
crates/ink/ir/src/ir/trait_def/mod.rs	0.00% <0.00%> (-83.34%)	⬇️
crates/ink/ir/src/ir/storage_item/config.rs	0.00% <0.00%> (-73.34%)	⬇️
crates/ink/ir/src/ir/storage_item/mod.rs	0.00% <0.00%> (-72.35%)	⬇️
crates/ink/ir/src/ir/blake2.rs	20.00% <0.00%> (-60.00%)	⬇️
crates/ink/ir/src/ir/trait_def/config.rs	7.14% <0.00%> (-57.15%)	⬇️
... and 27 more

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[ascjones]

As I said in the linked issue, this can possibly be replaced by asserting the debug buffer from the RPC dry run result.