remove changes in System.IO.Ports.sln

Author: sirntar

src/libraries/System.IO.Ports/System.IO.Ports.sln

@@ -13,8 +13,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "runtime.linux-arm.runtime.n
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "runtime.linux-arm64.runtime.native.System.IO.Ports", "pkg\runtime.linux-arm64.runtime.native.System.IO.Ports.proj", "{6D0F59C8-8EEC-457E-8916-E0108DAA2E9C}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "runtime.linux-riscv64.runtime.native.System.IO.Ports", "pkg\runtime.linux-riscv64.runtime.native.System.IO.Ports.proj", "{7c53024b-abd5-198f-f081-4fc48db2ca36}"
-EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "runtime.linux-bionic-arm64.runtime.native.System.IO.Ports", "pkg\runtime.linux-bionic-arm64.runtime.native.System.IO.Ports.proj", "{75326DCA-5991-4F58-87C4-48BA3C71FC92}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "runtime.linux-bionic-x64.runtime.native.System.IO.Ports", "pkg\runtime.linux-bionic-x64.runtime.native.System.IO.Ports.proj", "{E77C4ED8-597B-4C93-8EA1-D28FA427C284}"
@@ -117,10 +115,6 @@ Global
 		{6D0F59C8-8EEC-457E-8916-E0108DAA2E9C}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{6D0F59C8-8EEC-457E-8916-E0108DAA2E9C}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{6D0F59C8-8EEC-457E-8916-E0108DAA2E9C}.Release|Any CPU.Build.0 = Release|Any CPU
-		{7c53024b-abd5-198f-f081-4fc48db2ca36}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{7c53024b-abd5-198f-f081-4fc48db2ca36}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{7c53024b-abd5-198f-f081-4fc48db2ca36}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{7c53024b-abd5-198f-f081-4fc48db2ca36}.Release|Any CPU.Build.0 = Release|Any CPU
 		{75326DCA-5991-4F58-87C4-48BA3C71FC92}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{75326DCA-5991-4F58-87C4-48BA3C71FC92}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{75326DCA-5991-4F58-87C4-48BA3C71FC92}.Release|Any CPU.ActiveCfg = Release|Any CPU