Remove QNameCacheNamespace
QNames (and QNameModules) are providing proper interning facilities,
hence there is no point for parser to do the same. This actually
improves performance a bit, as the parser way of doing things requires
a bit of indirection to get to the appropriate namespace storage node.
JIRA: YANGTOOLS-652
Change-Id: I25f6ea5a78364a9f24fa6149ab69e9b2b1370960
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>
(cherry picked from commit
ef3583bc494e4cbd09910c51c3b9599d4d9c1fbd)
(cherry picked from commit
a9ee06a279886913204384400fc86871da7e2475)