feat(benchmarks): complete benchmarks of pallet asset-index

[clearloop]

Changes

• remove_asset
• withdraw
• complete withdraw
• unlock

Tests

Issues

• Weights checklist #261

[clearloop]

𝝺 WASMTIME_BACKTRACE_DETAILS=1 ./target/release/pint benchmark -p pallet_asset_index -e '*' --execution Wasm --wasm-execution Compiled --raw --output ./runtime/common/src/weights/pallet_asset_index.rs --chain pint-local                       
2021-08-18 15:44:45 assembling new collators for new session 0 at #0    
2021-08-18 15:44:45 assembling new collators for new session 1 at #0    
2021-08-18 15:44:46 panicked at 'Expected Ok(_). Got Err(
    <wasm:stripped>,
)', /Users/clearloop/code/PINT/pallets/asset-index/src/benchmarking.rs:72:9    
Error: Input("Error executing runtime benchmark: Other(\"Wasm execution trapped: wasm trap: unreachable\\nwasm backtrace:\\n    0: 0x22d9 - <unknown>!rust_begin_unwind\\n\")")

Could not generate weights caused by some wasm issue

[mattsse]

LGTM,
regarding the weights, let's just assume that will get resolved on its own.