Remove autoescape="strict" attributes from Soy templates.

Strict autoescaping is the default so they serve no purpose.

Design doc: []

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=170725633

java/google/registry/flows/soy/DomainCheckFeeEpp.soy

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-{namespace registry.soy.api autoescape="strict"}
+{namespace registry.soy.api}
 
 /** Domain check fee request for one domain. */
 {template .domaincheckfee stricthtml="false"}