Remove company from emeritus (open-telemetry#5887)

Follows open-telemetry/community#2391

Author: dmathieu

CONTRIBUTING.md

@@ -641,13 +641,13 @@ should be canceled.
 
 ### Emeritus
 
-- [Aaron Clawson](https://github.com/MadVikingGod), LightStep
-- [Anthony Mirabella](https://github.com/Aneurysm9), AWS
-- [Chester Cheung](https://github.com/hanyuancheung), Tencent
-- [Evan Torrie](https://github.com/evantorrie), Yahoo
-- [Gustavo Silva Paiva](https://github.com/paivagustavo), LightStep
-- [Josh MacDonald](https://github.com/jmacd), LightStep
-- [Liz Fong-Jones](https://github.com/lizthegrey), Honeycomb
+- [Aaron Clawson](https://github.com/MadVikingGod)
+- [Anthony Mirabella](https://github.com/Aneurysm9)
+- [Chester Cheung](https://github.com/hanyuancheung)
+- [Evan Torrie](https://github.com/evantorrie)
+- [Gustavo Silva Paiva](https://github.com/paivagustavo)
+- [Josh MacDonald](https://github.com/jmacd)
+- [Liz Fong-Jones](https://github.com/lizthegrey)
 
 ### Become an Approver or a Maintainer