The boot disk can not be partitioned or restored to a single partition.

Hello, I bought a few days before the mac . I need to have windows to handle a scanner , so I tried Boot Camp . Unfortunately , I do not know how, but after several failed attempts , I found that Boot Camp does not work now and reports "The boot disk can not be partitioned or restored to a single partition . " I tried deleting the volumes added from windows , but it is likely that it has remained one for error ( EFI ). This is the current situation:

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage Macintosh HD 959.4 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: EFI NO NAME 104.9 MB disk0s4

/dev/disk1 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 24.0 GB disk1

1: EFI EFI 314.6 MB disk1s1

2: Apple_CoreStorage Macintosh HD 23.6 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +982.0 GB disk2

Logical Volume on disk1s2, disk0s2

79068DB8-F40B-4F92-A98D-20948AA81B80

Unencrypted Fusion Drive

I suppose the problem is the volume /dev/disk0s4. So it is?
Can I delete it with a control terminal?