qcacld-3.0: Remove hdd_wmm_get_uapsd_mask()

Change Idf75957707c3799add0c59fdd532fe0c24d27117 ("qcacld-3.0: Remove
obsolete STA support for SIOCSIWESSID") removed the last client of
hdd_wmm_get_uapsd_mask(). Since this function is now unused, remove
it.

Change-Id: I28b1909690e1f1c813f4169b6429a7faecdac7d6
CRs-Fixed: 2371200
2 files changed