Missing HDD space after removing Boot Camp

[MasterEthan]

I don't recall how I removed it and what process I followed. I do recall trying to remove it so I could resize Macintosh HD (/dev/disk1) with the space it was using. Somewhere along the way, I lost the partition and no longer know where to go from here.

Also can't use Disk Utility GUI due to "A CoreStorage logical volume group with more than one logical volume has been detected. The Disk Utility GUI does not support full CoreStorage editing. To use Disk Utility use diskutil to revert to single logical volume per logical volume group."

My Goal is to get the 340 GB Macintosh HD (/dev/disk1) to take the free space, another option is giving the space to 50 GB DEV (/dev/disk2)

So here's where I'm at:
# diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage Macintosh HD 400.0 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3

/dev/disk1 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD +340.0 GB disk1
Logical Volume on disk0s2
233DC5B8-C5AA-47CB-86BF-64B2EAE376D1
Unencrypted

/dev/disk2 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Dev +50.0 GB disk2
Logical Volume on disk0s2
7E88215A-ED2F-4A95-AC2C-81BE5A9E7B88
Unencrypted
# diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group DD3497BF-75FC-4304-9A08-8DAC7B996A2F
=========================================================
Name: Macintosh HD
Status: Online
Size: 400000000000 B (400.0 GB)
Free Space: 9647681536 B (9.6 GB)
|
+-< Physical Volume 562738AD-B225-45ED-8137-DFFB757C7155
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 400000000000 B (400.0 GB)
|
+-> Logical Volume Family EDBC67BF-3215-4852-A53C-AA440218A8F7
| ----------------------------------------------------------
| Encryption Type: None
| |
| +-> Logical Volume 233DC5B8-C5AA-47CB-86BF-64B2EAE376D1
| ---------------------------------------------------
| Disk: disk1
| Status: Online
| Size (Total): 339999997952 B (340.0 GB)
| Revertible: No
| LV Name: Macintosh HD
| Volume Name: Macintosh HD
| Content Hint: Apple_HFS
|
+-> Logical Volume Family 5127C51D-D8AF-4D00-A30F-EF04C32A7402
----------------------------------------------------------
Encryption Type: None
|
+-> Logical Volume 7E88215A-ED2F-4A95-AC2C-81BE5A9E7B88
---------------------------------------------------
Disk: disk2
Status: Online
Size (Total): 49999998976 B (50.0 GB)
Revertible: No
LV Name: Dev
Volume Name: Dev
Content Hint: Apple_HFSX


I greatly appriaite any help.