RUST-1775 Remove manual in favor of a link to the docs page (#1079)

Author: abr-egn

.evergreen/config.yml

@@ -674,11 +674,6 @@ tasks:
     commands:
       - func: "check rustdoc"
 
-  - name: check-manual
-    tags: [lint]
-    commands:
-      - func: "check manual"
-
   - name: test-3.6-standalone
     tags: [3.6, standalone]
     commands:
@@ -1787,17 +1782,6 @@ functions:
           ${PREPARE_SHELL}
           .evergreen/check-rustdoc.sh
 
-  "check manual":
-    - command: shell.exec
-      type: test
-      params:
-        working_dir: src
-        shell: bash
-        script: |
-          ${PREPARE_SHELL}
-          .evergreen/install-dependencies.sh mdbook
-          manual/test.sh
-
   "upload-mo-artifacts":
     - command: shell.exec
       params:

.evergreen/install-dependencies.sh

@@ -27,10 +27,6 @@ for arg; do
 
     source .evergreen/env.sh
     rustup toolchain install nightly -c rustfmt
-  elif [ $arg == "mdbook" ]; then
-    source ${CARGO_HOME}/env
-    # Install the manual rendering tool
-    cargo install mdbook
   elif [ $arg == "junit-dependencies" ]; then
     source ${CARGO_HOME}/env