fix: remove gnofaucet leftover from gno.land Make

[zivkovicmilos]

Description

This PR removes the build.gnofaucet directive from the gno.land Makefile

Contributors' checklist...

• Added new tests, or not needed, or not feasible
• Provided an example (e.g. screenshot) to aid review or the PR is self-explanatory
• Updated the official documentation or not needed
• No breaking changes were made, or a BREAKING CHANGE: xxx message was included in the description
• Added references to related issues and PRs
• Provided any useful hints for running manual tests
• Added new benchmarks to generated graphs, if any. More info here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.78%. Comparing base (5a976ef) to head (2aa41da).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1957      +/-   ##
==========================================
+ Coverage   45.18%   47.78%   +2.59%     
==========================================
  Files         465      393      -72     
  Lines       68081    61602    -6479     
==========================================
- Hits        30763    29437    -1326     
+ Misses      34742    29695    -5047     
+ Partials     2576     2470     -106     

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