remove flaky pragma cli tests.

Tests for similar behavior already covered in TCL and Rust connection api tests. So flaky problem in these is not worth exploring. We just removed them.

tests/integration/mod.rs

@@ -1,6 +1,5 @@
 mod common;
 mod functions;
 mod fuzz;
-mod pragma;
 mod query_processing;
 mod wal;

tests/integration/pragma/mod.rs

@@ -1 +0,0 @@
-mod test_pragma_stmts;

tests/integration/pragma/test_pragma_stmts.rs

@@ -1,40 +0,0 @@
-/// rexpect does not work on Windows.
-/// https://github.com/rust-cli/rexpect/issues/11
-#[cfg(not(target_os = "windows"))]
-mod tests {
-    use assert_cmd::cargo::cargo_bin;
-    use rexpect::error::*;
-    use rexpect::session::{spawn_command, PtySession};
-    use std::process;
-
-    #[test]
-    fn test_pragma_journal_mode_wal() -> Result<(), Error> {
-        let mut child = spawn_command(run_cli(), Some(1000))?;
-        child.exp_regex("limbo>")?; // skip everything until limbo cursor appear
-        child.exp_regex(".?")?;
-        child.send_line("pragma journal_mode;")?;
-        child.exp_string("wal")?;
-        quit(&mut child)
-    }
-
-    #[test]
-    fn test_pragma_wal_checkpoint() -> Result<(), Error> {
-        let mut child = spawn_command(run_cli(), Some(1000))?;
-        child.exp_regex("limbo>")?; // skip everything until limbo cursor appear
-        child.exp_regex(".?")?;
-        child.send_line("pragma wal_checkpoint;")?;
-        child.exp_string("0|0|0")?;
-        quit(&mut child)
-    }
-
-    fn quit(child: &mut PtySession) -> Result<(), Error> {
-        child.send_line(".quit")?;
-        child.exp_eof()?;
-        Ok(())
-    }
-
-    fn run_cli() -> process::Command {
-        let bin_path = cargo_bin("limbo");
-        process::Command::new(bin_path)
-    }
-}