chore: apply PR feedback

Author: kwasniew

lib/unleash/backup_file_reader.rb

@@ -1,5 +1,4 @@
 require 'unleash/configuration'
-require 'json'
 
 module Unleash
   class BackupFileReader
@@ -15,11 +14,6 @@ def self.read!
       Unleash.logger.error "Unable to read the backup_file: #{e}"
       # :nocov:
       nil
-    rescue JSON::ParserError => e
-      # :nocov:
-      Unleash.logger.error "Unable to parse JSON from existing backup_file: #{e}"
-      # :nocov:
-      nil
     rescue StandardError => e
       # :nocov:
       Unleash.logger.error "Unable to extract valid data from backup_file. Exception thrown: #{e}"

lib/unleash/streaming_client_executor.rb

@@ -21,7 +21,7 @@ def initialize(name, engine)
           read_backup_file!(engine)
         end
       rescue StandardError => e
-        # fail back to reading the backup file
+        # fall back to reading the backup file
         Unleash.logger.warn "StreamingClientExecutor was unable to initialize, attempting to read from backup file."
         Unleash.logger.debug "Exception Caught: #{e}"
         read_backup_file!(engine)

lib/unleash/toggle_fetcher.rb

@@ -25,7 +25,7 @@ def initialize(engine)
           fetch
         end
       rescue StandardError => e
-        # fail back to reading the backup file
+        # fall back to reading the backup file
         Unleash.logger.warn "ToggleFetcher was unable to fetch from the network, attempting to read from backup file."
         Unleash.logger.debug "Exception Caught: #{e}"
         read_backup_file!