Config of LTE signal strength default value remove SNR

parameters_used_for_lte_signal_bar_int default value set
"RSRP = 1 << 0"

Bug: 146317112
Test: 1. atest SignalStrengthTest.java
2. atest cts/tests/tests/telephony/current/src/android/telephony/cts/SignalStrengthTest.java
Change-Id: I75d5719a743ce815990a17c640bfb15e47d7802a
Merged-In: Ifd8ba60f112832aac975974e5f29290ac48c18b2