Revert "Travis: Attempt to build ESP8266 toolchain"
Revert "Travis: Attempt to build ESP8266 toolchain"

This reverts commit dd1a0acee0231e535303513d46fbde1701deb268.

rraallvv/microflo,microflo/microflo,rraallvv/microflo,rraallvv/microflo,microflo/microflo,microflo/microflo,microflo/microflo,rraallvv/microflo,microflo/microflo,microflo/microflo