remove spec folder

this is not needed anymore.

spec/svtplay-dl.spec

@@ -1,18 +0,0 @@
-a = Analysis(['../bin/svtplay-dl'],
-             binaries=None,
-             datas=None,
-             hiddenimports=["Crypto"],
-             hookspath=None,
-             runtime_hooks=None,
-             excludes=None)
-pyz = PYZ(a.pure, a.zipped_data)
-exe = EXE(pyz,
-          a.scripts,
-          a.binaries,
-          a.zipfiles,
-          a.datas,
-          name='svtplay-dl',
-          debug=False,
-          strip=None,
-          upx=False,
-          console=True)