Merge "Remove unused string." into pi-dev

    <!-- Content description of the data connection type GPRS. [CHAR LIMIT=NONE] -->

    <string name="data_connection_gprs">GPRS</string>

    <!-- Content description of the data connection type 1x. [CHAR LIMIT=NONE] -->

    <string name="data_connection_1x">1 X</string>

    <!-- Content description of the data connection type HSPA and its variants. [CHAR LIMIT=NONE] -->

    <string name="data_connection_hspa">HSPA</string>