How can I hide the name of the variable related to a list box

Question

How can I hide the name of the variable related to a list box

i want the text in the red box not to be seen

import bpy
from bpy.props import *
class MainPanel(bpy.types.Panel):
    bl_idname = "armature.retarget"
    bl_label = "Armature retarget"
    bl_space_type = "VIEW_3D"
    bl_region_type = "UI"
    bl_category = 'View'
def draw(self, context):
    scene = context.scene
    layout = self.layout
    layout.label(text="Select Armatures")
    layout.prop(context.scene, 'src_arm')
    layout.prop(context.scene, 'tgt_arm')


def armatures_items(self, context):
    obs = []
    for ob in context.scene.objects:
        if ob.type == 'ARMATURE':
            obs.append((ob.name, ob.name, ""))
    return obs


def register():
    bpy.utils.register_class(MainPanel)
bpy.types.Scene.src_arm = bpy.props.EnumProperty(items=MainPanel.armatures_items)
bpy.types.Scene.tgt_arm = bpy.props.EnumProperty(items=MainPanel.armatures_items)


def unregister():
    bpy.utils.unregister_class(MainPanel)
if name == "main":
    register()
```

Answer 1

Some options

Setting the text in the layout overrides the default

layout.prop(scene, 'tgt_arm', text="")

which by default displays the name of the property

bpy.types.Scene.tgt_arm = bpy.props.EnumProperty(
        name="Target",
        items=MainPanel.armatures_items)

which when not set defaults to the property name, in this case "tgt_arm"

Polled object pointer.

Would suggest instead of an enum use a pointer to the armature object itself.

As explained in https://blender.stackexchange.com/a/101301/15543 can poll them.

Example code:

import bpy
from bpy.props import *
def armature_poll(self, object):
    return object.type == 'ARMATURE'
class MainPanel(bpy.types.Panel):
    bl_idname = "armature.retarget"
    bl_label = "Armature retarget"
    bl_space_type = "VIEW_3D"
    bl_region_type = "UI"
    bl_category = 'View'
def draw(self, context):
    scene = context.scene
    layout = self.layout
    layout.prop(scene, 'tgt_arm', text="")


def armatures_items(self, context):
    obs = []
    for ob in context.scene.objects:
        if ob.type == 'ARMATURE':
            obs.append((ob.name, ob.name, ""))
    return obs


def register():
    bpy.utils.register_class(MainPanel)
bpy.types.Scene.tgt_arm = PointerProperty(
        poll=armature_poll,
        type=bpy.types.Object)


def unregister():
    bpy.utils.unregister_class(MainPanel)
if name == "main":
    register()