Remove testing of latest server version for 3.7 branch

Author: jyemin

.evergreen/.evg.yml

@@ -392,10 +392,6 @@ axes:
   - id: version
     display_name: MongoDB Version
     values:
-      - id: "latest"
-        display_name: "latest"
-        variables:
-           VERSION: "latest"
       - id: "3.6"
         display_name: "3.6"
         variables:
@@ -501,15 +497,15 @@ buildvariants:
     - name: "static-analysis"
 
 - matrix_name: "tests-zlib-compression"
-  matrix_spec: { compressor : "zlib", auth: "noauth", ssl: "nossl", jdk: "jdk6", version: ["3.6", "latest"], topology: "standalone", os:
+  matrix_spec: { compressor : "zlib", auth: "noauth", ssl: "nossl", jdk: "jdk6", version: ["3.6"], topology: "standalone", os:
   "linux" }
   display_name: "${version} ${compressor} ${topology} ${auth} ${ssl} ${jdk} ${os} "
   tags: ["tests-variant"]
   tasks:
      - name: "test"
 
 - matrix_name: "tests-snappy-compression"
-  matrix_spec: { compressor : "snappy", auth: "noauth", ssl: "nossl", jdk: "jdk7", version: ["3.4", "3.6", "latest"], topology: "standalone", os: "linux" }
+  matrix_spec: { compressor : "snappy", auth: "noauth", ssl: "nossl", jdk: "jdk7", version: ["3.4", "3.6"], topology: "standalone", os: "linux" }
   display_name: "${version} ${compressor} ${topology} ${auth} ${ssl} ${jdk} ${os} "
   tags: ["tests-variant"]
   tasks: