apns: Remove proxy for the "TIM WAP" APN

The proxy prevents mobile data from working
(e.g. loading a webpage results in ERR_EMPTY_RESPONSE).

On all the mobile phones I've inserted the SIM in,
when the APN's are obtained automatically
this parameter is not set to any value.

Also remove unnecessary parameters and correct authentication type.

Change-Id: I16592de4555fb8ab3fe502b3b39779720c344afb

prebuilt/common/etc/apns-conf.xml

@@ -364,7 +364,7 @@
   <apn carrier="Unefon Modem" mcc="222" mnc="01" apn="modem.iusacellgsm.mx" user="iusacellgsm" password="iusacellgsm" type="dun" mvno_type="spn" mvno_match_data="UNEFON" />
   <apn carrier="Unefon MMS" mcc="222" mnc="01" apn="mms.iusacellgsm.mx" mmsc="http://mms.iusacell3g.com/" user="mmsiusacellgsm" password="mmsiusacellgsm" type="mms" mvno_type="spn" mvno_match_data="UNEFON" />
   <apn carrier="TIM IT" mcc="222" mnc="01" apn="ibox.tim.it" proxy="" port="" user="" password="" mmsc="" type="default,supl" />
-  <apn carrier="TIM IT WAP" mcc="222" mnc="01" apn="wap.tim.it" proxy="213.26.205.1" port="80" user="WAPTIM" password="WAPTIM" server="http://wap.i.tim.it" mmsc="" type="default,supl" />
+  <apn carrier="TIM IT WAP" mcc="222" mnc="01" apn="wap.tim.it" proxy="" port="" user="WAPTIM" password="WAPTIM" mmsc="" authtype="1" type="default,supl" />
   <apn carrier="TIM MMS" mcc="222" mnc="01" apn="mms.tim.it" proxy="" port="" user="" password="" mmsc="http://mms.tim.it/servlets/mms" mmsproxy="213.230.130.89" mmsport="80" type="mms" />
   <apn carrier="iTIM" mcc="222" mnc="01" apn="unico.tim.it" proxy="213.230.130.89" port="80" user="" password="" mmsc="http://mms.tim.it/servlets/mms" mmsproxy="213.230.130.89" mmsport="80" type="mms" />
   <apn carrier="Tiscali INTERNET" mcc="222" mnc="01" apn="tiscalimobileinternet" type="default,supl" />