[.github] Remove stray code (open-telemetry#29688)

**Description:** 

We now have pdata 1.0.0 🎉. After
open-telemetry/opentelemetry-collector/pull/8975, we decided not to have
RC releases, so there is no need to have the RC block.

.github/workflows/scripts/check-collector-module-version.sh

@@ -57,20 +57,12 @@ for mod in ${beta_modules[@]}; do
    check_collector_versions_correct "$mod" "$BETA_MOD_VERSION"
 done
 
-# Check RC modules
-RC_MODULE="go.opentelemetry.io/collector/pdata"
-RC_MOD_VERSION=$(get_collector_version "$RC_MODULE " "$MAIN_MOD_FILE")
-check_collector_versions_correct "$RC_MODULE" "$RC_MOD_VERSION"
-for mod in ${rc_modules[@]}; do
-   check_collector_versions_correct "$mod" "$RC_MOD_VERSION"
-done
-
 # Check stable modules, none currently exist, uncomment when pdata is 1.0.0
-# STABLE_MODULE="go.opentelemetry.io/collector/pdata "
-# STABLE_MOD_VERSION=$(get_collector_version "$STABLE_MODULE" "$MAIN_MOD_FILE")
-# check_collector_versions_correct "$STABLE_MODULE" "$STABLE_MOD_VERSION"
-# for mod in ${stable_modules[@]}; do
-#    check_collector_versions_correct "$mod" "$STABLE_MOD_VERSION"
-# done
+STABLE_MODULE="go.opentelemetry.io/collector/pdata"
+STABLE_MOD_VERSION=$(get_collector_version "$STABLE_MODULE" "$MAIN_MOD_FILE")
+check_collector_versions_correct "$STABLE_MODULE" "$STABLE_MOD_VERSION"
+for mod in ${stable_modules[@]}; do
+   check_collector_versions_correct "$mod" "$STABLE_MOD_VERSION"
+done
 
 git diff --exit-code

internal/buildscripts/modules

@@ -34,10 +34,7 @@ beta_modules=(
   "go.opentelemetry.io/collector/semconv"
 )
 
-rc_modules=(
+stable_modules=(
   "go.opentelemetry.io/collector/featuregate"
   "go.opentelemetry.io/collector/pdata"
 )
-
-# No stable modules currently exist, add pdata here once 1.0.0
-stable_modules=()