PL2: Update update_engine_sideload from enchilada

 * This Fixed Payload Flash

Signed-off-by: IsaacChen <isaacchen@isaacchen.cn>

recovery/root/etc/update_engine/update-payload-key.pub.pem

@@ -1,9 +0,0 @@
------BEGIN PUBLIC KEY-----
-MIIBIDANBgkqhkiG9w0BAQEFAAOCAQ0AMIIBCAKCAQEAz7IB8CeSZXlwZ423rlR2
-1gUFNL4MDzCDcPCw+PCO2PYqOfgErE6d1iYnWfJUWrzHqgT6AibQApusq0KpcIBg
-I710DHP60wxWsoYDfrFmPnn2xBlu0E1BySwSXRMMKdgBodtoGvLYneLUbnryGDhV
-gBhur3to14lXToJswXYhkNcKrFZblM94EtepC30EXz2pUqnFhc9DfO1IV2dchZ04
-CKiC/slAHcbOBRQOlMkY44EiOqafffLe2QdnUFy/scCoNx6YhrVuhZJfr8zzEq7q
-aokuVf2maVfw3SReZUHhiL0DiNiAR4VXWR8WouL98BuDxtdSmPLie/PrDBKrfMrG
-iwIBAw==
------END PUBLIC KEY-----