Remove Perl preprocessing scripts

They were replaced by Rust versions in 24db54a. Now that the --remote build is available, we should not keep these two code paths around.

Closes #234.

Author: domenic

.dockerignore

@@ -1,7 +1,6 @@
 *
 !entities/out
 !quotes/out
-!*.pl
 !build.sh
 !lint.sh
 !Cargo.lock

.gitattributes

@@ -1,8 +1 @@
-*.conf  text eol=lf
-*.inc   text eol=lf
-*.json  text eol=lf
-*.md    text eol=lf
-*.pl    text eol=lf
-*.py    text eol=lf
-*.sh    text eol=lf
-*.yml   text eol=lf
+* text=auto eol=lf

.pre-process-annotate-attributes.pl

@@ -20,5 +20,4 @@ RUN pipx install bs-highlighter
 COPY . /whatwg/html-build/
 
 ENV SKIP_BUILD_UPDATE_CHECK true
-ENV PROCESS_WITH_RUST true
 ENTRYPOINT ["bash", "/whatwg/html-build/build.sh"]

.pre-process-index-generator.pl

@@ -28,7 +28,7 @@ Local builds will be fastest, but require installing a lot of prerequisites. Usi
 
 To build locally, you'll need the following commands installed on your system:
 
-- `curl`, `grep`, `perl`, `unzip`
+- `curl`, `grep`, `perl`, `unzip`, `cargo`
 
 Optionally, for faster builds, you can install [Wattsi](https://github.com/whatwg/wattsi). If you don't bother with that, we will use the [build server](https://github.com/whatwg/build.whatwg.org), which requires an internet connection.