Remove ldap encryption patch

bd8dc9bd0c/app/models/concerns/ldap_authenticable.rb (L50)

Dockerfile

@@ -24,9 +24,6 @@ RUN curl -L https://github.com/tootsuite/mastodon/archive/v${VERSION}.tar.gz | t
     bundle install --deployment --without test development && \
     yarn install --pure-lockfile
 
-COPY patches /app/code/patches
-RUN for patch in /app/code/patches/*; do patch -N -p0 < $patch; done
-
 # secret keys are not built into assets, so precompiling is safe to do here
 # (these variables are required by rake though)
 RUN SECRET_KEY_BASE=insecure.secret_key_base OTP_SECRET=insecure.otp_secret \

patches/Remove_LDAP_encryption.patch

@@ -1,18 +0,0 @@
-Index: lib/devise/ldap_authenticatable.rb
-IDEA additional info:
-Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
-<+>UTF-8
-===================================================================
---- lib/devise/ldap_authenticatable.rb	(date 1539296558000)
-+++ lib/devise/ldap_authenticatable.rb	(date 1540988096000)
-@@ -12,10 +12,6 @@
-             host: Devise.ldap_host,
-             port: Devise.ldap_port,
-             base: Devise.ldap_base,
--            encryption: {
--              method: Devise.ldap_method,
--              tls_options: tls_options,
--            },
-             auth: {
-               method: :simple,
-               username: Devise.ldap_bind_dn,