fix(action): Don't pre-filter checked files

This reverts commit fc7f517466.

This has two problems
- This doesn't correctly handle spaces, likely needing #708
- This overrides excludes, see #347

This also has a weird cost/benefit balance because this requires enough
repo history to do the analysis which takes time to pull down.

Rather than waiting until the relevant changes are in to make this work,
I'm pulling this out for now.

Fixes #806

action/entrypoint.sh

@@ -14,25 +14,11 @@ CMD_NAME="typos"
 COMMAND="${_INSTALL_DIR}/${CMD_NAME}"
 
 TARGET=${INPUT_FILES:-"."}
-if [[ -n "${GITHUB_BASE_REF:-}" ]]; then
-    BASE_REF=HEAD~  # HACK: GITHUB_BASE_REF is failing the `--verify` but `HEAD~ should be the same for pull requests
-    git config --global --add safe.directory "$PWD"
-    if git rev-parse --verify ${BASE_REF} 2>/dev/null ; then
-        log "Limiting checks to ${GITHUB_BASE_REF}...HEAD"
-        TARGET=$(git diff ${BASE_REF}...HEAD --name-only --diff-filter=AM -- ${TARGET})
-        if [[ -z "${TARGET:-}" ]]; then
-                log "INPUT_FILES are unchanged"
-                exit 0
-        fi
-    else
-        log "WARN: Not limiting checks to ${BASE_REF}...HEAD, ${GITHUB_BASE_REF} is not available"
-    fi
-fi
-
 if [[ -z $(ls ${TARGET} 2>/dev/null) ]]; then
     log "ERROR: Input files (${TARGET}) not found"
     exit 1
 fi
+
 if [[ ! -x ${COMMAND} ]]; then
     VERSION=1.16.7
     log "Downloading 'typos' v${VERSION}"