Remove duplicate alarm tones

Taken form rvc-namaste-dev ag/15272244
The alarm tones Cesium/Oxygen, Argon/Fermium, Hassium/Helium,
Krypton/Plutonium and Neon/Nobelium are same. Also, Alarm_Classic is
wrongly titled Cesium and Promethium is wrongly titled Platinum causing
two alarm tones of the same name. However this is being looked by
frameworks team so haven't removed them

Bug: 190080582
Test: Tested by checking ogg files in out directory
Change-Id: I7177a5c69c7ec2f2ea76b89ee3f9e3dcf91b18c3