Remove old availability URL implementation

src/api/views.py

@@ -18,7 +18,6 @@ from cachetools.func import ttl_cache
 from registrar.utility.s3_bucket import S3ClientError, S3ClientHelper
 
 
-DOMAIN_FILE_URL = "https://raw.githubusercontent.com/cisagov/dotgov-data/main/current-full.csv"
 RDAP_URL = "https://rdap.cloudflareregistry.com/rdap/domain/{domain}"
 
 
@@ -42,30 +41,6 @@ DOMAIN_API_MESSAGES = {
 }
 
 
-# this file doesn't change that often, nor is it that big, so cache the result
-# in memory for ten minutes
-@ttl_cache(ttl=600)
-def _domains():
-    """Return a list of the current .gov domains.
-
-    Fetch a file from DOMAIN_FILE_URL, parse the CSV for the domain,
-    lowercase everything and return the list.
-    """
-    DraftDomain = apps.get_model("registrar.DraftDomain")
-    # 5 second timeout
-    file_contents = requests.get(DOMAIN_FILE_URL, timeout=5).text
-    domains = set()
-    # skip the first line
-    for line in file_contents.splitlines()[1:]:
-        # get the domain before the first comma
-        domain = line.split(",", 1)[0]
-        # sanity-check the string we got from the file here
-        if DraftDomain.string_could_be_domain(domain):
-            # lowercase everything when we put it in domains
-            domains.add(domain.lower())
-    return domains
-
-
 def check_domain_available(domain):
     """Return true if the given domain is available.