Revert "Add FluidState to LocatableBlock (#2443)"

This reverts commit f61f1ac.

Author: ImMorpheus

src/main/java/org/spongepowered/api/world/LocatableBlock.java

@@ -28,7 +28,6 @@
 import org.spongepowered.api.block.BlockState;
 import org.spongepowered.api.data.SerializableDataHolder;
 import org.spongepowered.api.data.persistence.DataBuilder;
-import org.spongepowered.api.fluid.FluidState;
 import org.spongepowered.api.util.CopyableBuilder;
 import org.spongepowered.api.world.server.ServerLocation;
 import org.spongepowered.api.world.server.ServerWorld;
@@ -52,11 +51,6 @@ static Builder builder() {
      */
     BlockState blockState();
 
-    /**
-     * Gets the {@link FluidState} for this locatable block.
-     */
-    FluidState fluidState();
-
     interface Builder extends org.spongepowered.api.util.Builder<LocatableBlock, Builder>, CopyableBuilder<LocatableBlock, Builder>,
             DataBuilder<LocatableBlock> {
 
@@ -68,11 +62,6 @@ interface Builder extends org.spongepowered.api.util.Builder<LocatableBlock, Bui
          */
         Builder state(BlockState blockState);
 
-        /**
-         * Sets the {@link FluidState} for this builder.
-         */
-        Builder fluid(FluidState fluid);
-
         /**
          * Sets the {@link BlockState} and {@link Vector3i position} for this
          * builder.