doc: Remove confusing assert linter

doc/developer-notes.md

@@ -739,12 +739,6 @@ Common misconceptions are clarified in those sections:
 - Passing (non-)fundamental types in the [C++ Core
   Guideline](https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#Rf-conventional).
 
-- Assertions should not have side-effects.
-
-  - *Rationale*: Even though the source code is set to refuse to compile
-    with assertions disabled, having side-effects in assertions is unexpected and
-    makes the code harder to understand.
-
 - If you use the `.h`, you must link the `.cpp`.
 
   - *Rationale*: Include files define the interface for the code in implementation files. Including one but

test/lint/lint-assertions.py

@@ -23,20 +23,10 @@ def git_grep(params: [], error_msg: ""):
 
 
 def main():
-    # PRE31-C (SEI CERT C Coding Standard):
-    # "Assertions should not contain assignments, increment, or decrement operators."
-    exit_code = git_grep([
-        "-E",
-        r"[^_]assert\(.*(\+\+|\-\-|[^=!<>]=[^=!<>]).*\);",
-        "--",
-        "*.cpp",
-        "*.h",
-    ], "Assertions should not have side effects:")
-
     # Aborting the whole process is undesirable for RPC code. So nonfatal
     # checks should be used over assert. See: src/util/check.h
     # src/rpc/server.cpp is excluded from this check since it's mostly meta-code.
-    exit_code |= git_grep([
+    exit_code = git_grep([
         "-nE",
         r"\<(A|a)ss(ume|ert) *\(.*\);",
         "--",