Fix current JDK major version extraction (elastic#137779)

Author: gbanasiak

.buildkite/scripts/trigger-if-java-ea-new-build.sh

@@ -13,7 +13,7 @@
 RECENT_TIME_WINDOW=${RECENT_TIME_WINDOW:-24}
 
 # Extract current JDK major version from bundled_jdk in version.properties
-CURRENT_JDK=$(grep "^bundled_jdk =" build-tools-internal/version.properties | cut -d'=' -f2 | tr -d ' ' | cut -d'+' -f1)
+CURRENT_JDK=$(grep "^bundled_jdk =" build-tools-internal/version.properties | cut -d'=' -f2 | tr -d ' ' | cut -d'+' -f1 | cut -d'.' -f1)
 TARGET_JDK=$((CURRENT_JDK + 1))
 
 echo "Current JDK major version: $CURRENT_JDK"
@@ -51,10 +51,6 @@ echo "Latest JDK ${TARGET_JDK} build from ES archive:"
 echo "  Timestamp: $TIMESTAMP"
 echo "  JDK Identifier: $JDK_IDENTIFIER"
 
-# Set variables for use in the pipeline trigger
-jdkbuild="$JDK_IDENTIFIER"
-jdk_timestamp="$TIMESTAMP"
-
 # Check if timestamp is within last 24 hours
 CURRENT_TIME=$(date +%s)
 BUILD_TIME=$(date -d "$TIMESTAMP" +%s 2>/dev/null || date -j -f "%Y-%m-%dT%H:%M:%S" "${TIMESTAMP%Z}" +%s 2>/dev/null || echo "0")