Remove JVM args from gradle.properties

The JVM arguments for Spotless compiler exports are no longer needed.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: nakamura-to

gradle.properties

@@ -1,7 +0,0 @@
-# https://github.com/diffplug/spotless/issues/834
-org.gradle.jvmargs=-Dfile.encoding=UTF-8 \
-        --add-exports jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED \
-        --add-exports jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED \
-        --add-exports jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED \
-        --add-exports jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED \
-        --add-exports jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED