[tests] removes -journal-disable & -check options that are already defined in @PTEST_DEFAULT_OPTIONS@

- warns only on fundamental types reads

- RTE is stricter than C for unsigned chars
- RTE does not warn on initialization for structs/union

presence of an offset does not mean that we could write a spurious value through
a union.

Only modifications introduced by non necessary casts elimination

Only differences comes from using float builtins in expr-to-term

According to the kernel option -warn-invalid-pointer.