fix: remove OVERRIDER_MIRROR in oracular raw

that was meant for local build

Author: SaicharanKandukuri

suites/oracular/raw/raw.sh

@@ -3,7 +3,6 @@
 
 # this is an example file to BUILD raw file system
 # export variable SUITE to set debootstrap suite name (default: hirsute)
-export OVERRIDER_MIRROR="http://127.0.0.1:8080/ubuntu-ports/"
 source plugins/envsetup
 
 export OVERRIDER_COMPRESSION_TYPE