[analyzer] Match standard libraries regardless `restrict` qualifier
Remove the `restrict` sensitivity from StdLibraryFunctionsChecker to
simplify the code and remove the risk of a failure to match.
c5dd283d2f2409dfca13628e15bbf0e526dfc3f0 demonstrates that UCRT does not
specify the `restrict` qualifiers leading to non-matches in
StdLibraryFunctionsChecker. There might be other non-standard-compliant
libc implementations that share this drawback.
The `restrict` sensitivity does not seem to improve analyzer precision
in any practical case, yet it increases code complexity and adds a risk
of FNs as happened with UCRT.
--
CPP-9480