Revert "Suppress unused variable warning for debug_print macros (#1258)"

[cmichi]

This reverts commit b6dd935.

See the discussion in #1258 (comment), there is a regression now. We need to revisit this. I'll create an issue once we've merged this PR.

[paritytech-cicd-pr]

🦑 📈 ink! Example Contracts ‒ Changes Report 📉 🦑

These are the results when building the examples/* contracts from this branch with cargo-contract 1.4.0-45fbc0b and comparing them to ink! master:

	Δ Optimized Size	Δ Used Gas	Total Optimized Size	Total Used Gas
accumulator			1.00 K
adder			2.04 K
contract-introspection			2.32 K
contract-terminate			0.92 K	275_000
contract-transfer			8.13 K	75_000
data-structures			1.73 K
delegate-calls			2.89 K	76_242
delegator		+1	6.34 K	232_136
dns			8.81 K	225_000
erc1155			16.74 K	450_000
erc20			8.42 K	225_000
erc721			11.62 K	600_000
flipper			1.24 K	75_000
forward-calls			2.87 K	151_411
incrementer			1.14 K
mother			12.15 K
multisig			25.28 K	470_240
rand-extension			3.79 K	75_000
seal-code-hash			1.39 K
seal-ecdsa			1.71 K
set-code-hash			1.49 K	150_000
subber			2.06 K
trait-erc20			8.69 K	225_000
trait-flipper			0.97 K	75_000
trait-incrementer			1.12 K	150_000
updated-incrementer			9.55 K
upgradeable-flipper			1.48 K

Link to the run | Last update: Wed May 25 09:56:08 CEST 2022

[codecov-commenter]

Codecov Report

Merging #1276 (fb22577) into master (260946f) will decrease coverage by 18.49%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #1276       +/-   ##
===========================================
- Coverage   67.09%   48.59%   -18.50%     
===========================================
  Files         176      176               
  Lines        5920     5920               
===========================================
- Hits         3972     2877     -1095     
- Misses       1948     3043     +1095     

Impacted Files	Coverage Δ
crates/lang/codegen/src/traits.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/generator/env.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/generator/mod.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/enforced_error.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/generator/blake2b.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/generator/storage.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/generator/arg_list.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/generator/contract.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/generator/selector.rs	0.00% <0.00%> (-100.00%)	⬇️
crates/lang/codegen/src/generator/trait_def/mod.rs	0.00% <0.00%> (-100.00%)	⬇️
... and 15 more

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