Removes ndk-glue + ndk-macro as part of rust-mobile#372 modularization

The ndk-glue and ndk-macro subdirectores have been split into a
stand-alone repository at: https://github.com/rust-mobile/ndk-glue

This is being done as part of the modularization effort described in
issue rust-mobile#372

The stand-alone repository was filtered like this:

```
git clone https://github.com/newren/git-filter-repo
git clone https://github.com/rust-windowing/android-ndk-rs.git ndk-glue
cd ndk-glue
py ../git-filter-repo/git-filter-repo \
    --path ndk-glue --path ndk-macro \
    --path ndk-examples --path-rename ndk-examples:examples \
    --path LICENSE-APACHE --path LICENSE-MIT \
    --path Cargo.toml --path rustfmt.toml \
    --path .github --path .gitignore
```

The last commit in this repo that is included within the
stand-alone repository is 107f03e

Although ndk-glue is also being deprecated at the same time as
splitting it out this commit doesn't make any README changes for
this repo yet which will be addressed separately.

.github/workflows/publish.yml

@@ -16,9 +16,7 @@ jobs:
         crate:
           - { name: "ndk-sys", target: "armv7-linux-androideabi" }
           - { name: "ndk", target: "armv7-linux-androideabi" }
-          - { name: "ndk-macro", target: "x86_64-unknown-linux-gnu" }
           - { name: "ndk-context", target: "armv7-linux-androideabi" }
-          - { name: "ndk-glue", target: "armv7-linux-androideabi" }
           - { name: "ndk-build", target: "x86_64-unknown-linux-gnu" }
           - { name: "cargo-apk", target: "x86_64-unknown-linux-gnu" }
     steps:

.github/workflows/rust.yml

@@ -206,14 +206,6 @@ jobs:
       run:
         cargo test -p ndk-build --all-features
 
-    - name: Test ndk-glue
-      run:
-        cargo test -p ndk-glue --all-features
-
-    - name: Test ndk-macro
-      run:
-        cargo test -p ndk-macro --all-features
-
     - name: Test cargo-apk
       run:
         cargo test -p cargo-apk --all-features

Cargo.toml

@@ -2,10 +2,8 @@
 members = [
     "ndk",
     "ndk-context",
-    "ndk-macro",
     "ndk-build",
     "ndk-examples",
-    "ndk-glue",
     "ndk-sys",
     "cargo-apk",
 ]

ndk-examples/Cargo.toml

@@ -11,7 +11,7 @@ libc = "0.2"
 log = "0.4.14"
 ndk = { path = "../ndk", features = ["api-level-23"] }
 ndk-context = { path = "../ndk-context" }
-ndk-glue = { path = "../ndk-glue", features = ["logger"] }
+ndk-glue = { version = "0.7", features = ["logger"] }
 
 [[example]]
 name = "hello_world"