Revert "Adding symbol table, integer and boolean constants, moved Location/LocationRange/LocationAware to syntax package"
Revert "Added null constant, fixed tests"
Revert "Refactoring constants/literals, added float constant"
Revert "Refactoring constants/literals, added float constant"

This reverts commit ec7ef4625017b2e24f43f55fbd6ecb8d2beb48c8..290d4e3f76f10ba87366764c083b41287004929c