Remove redundant tokens form TWO_TOKEN_OPERATOR

"<=" and ">=" are already in {TWO_TOKEN_RELATIONAL_OPERATOR} so they
don't need to be explicit in TWO_TOKEN_OPERATOR.
Comparison operations

`==`, `!=`, `=~`, `===`, and `!==`.
And operations

`&&&`, `and`, and `&&`.
Or Operation

`|||`, `||`, and `or`.
Fix or + and operation test
Match operation

`=`
Association operation

`=>`
Pipe operation

Confusingly documentation calls `|>` pipe, but in the lexer and grammar,
pipe is just `|` and `|>` is part of a arrow operations.
Type operation

`::`