Revert "Add buildprops suggested by Codex01 from xda"

This reverts commit f2c5704849f246f192477b3973145311c74bdb8b.

Change-Id: I02fa2f6ce25c18f2945c8b17d86b2aef05a660e5
Remove signalstrength option to fix 4G signal bar

Change-Id: I028b1845d60f1a5c3c855410d2ee71f631149129