Revert "Test FLE via docker (#2395)"

This reverts commit dbf68bd.

Author: p

.evergreen/config/common.yml.erb

@@ -554,10 +554,6 @@ tasks:
     commands:
       - func: "export FLE credentials"
       - func: "run tests"
-  - name: "test-fle-via-docker"
-    commands:
-      - func: "export FLE credentials"
-      - func: "run tests via docker"
   - name: "test-aws-auth"
     commands:
       - func: "export AWS auth credentials"

.evergreen/config/standard.yml.erb

@@ -446,7 +446,7 @@ buildvariants:
       fle: fle
     display_name: "FLE: ${mongodb-version} ${ruby}"
     tasks:
-      - name: "test-fle-via-docker"
+      - name: "test-fle"
 
   - matrix_name: "fle-4.2"
     matrix_spec: