remove msvc and NSIS project files

fix some windows build warnings

Win32/installer.iss

@@ -1,41 +0,0 @@
-#define I2Pd_AppName "i2pd"
-#define I2Pd_ver "2.14.0"
-#define I2Pd_Publisher "PurpleI2P"
-
-[Setup]
-AppName={#I2Pd_AppName}
-AppVersion={#I2Pd_ver}
-AppPublisher={#I2Pd_Publisher}
-DefaultDirName={pf}\I2Pd
-DefaultGroupName=I2Pd
-UninstallDisplayIcon={app}\I2Pd.exe
-OutputDir=.
-LicenseFile=../LICENSE
-OutputBaseFilename=setup_{#I2Pd_AppName}_v{#I2Pd_ver}
-SetupIconFile=mask.ico
-InternalCompressLevel=ultra64
-Compression=lzma/ultra64
-SolidCompression=true
-ArchitecturesInstallIn64BitMode=x64
-AppVerName={#I2Pd_AppName}
-ExtraDiskSpaceRequired=15
-AppID={{621A23E0-3CF4-4BD6-97BC-4835EA5206A2}
-AppPublisherURL=http://i2pd.website/
-AppSupportURL=https://github.com/PurpleI2P/i2pd/issues
-AppUpdatesURL=https://github.com/PurpleI2P/i2pd/releases
-
-[Files]
-Source: ..\i2pd_x86.exe; DestDir: {app}; DestName: i2pd.exe; Flags: ignoreversion; Check: not IsWin64
-Source: ..\i2pd_x64.exe; DestDir: {app}; DestName: i2pd.exe; Flags: ignoreversion; Check: IsWin64
-Source: ..\README.md; DestDir: {app}; DestName: Readme.txt; Flags: onlyifdoesntexist
-Source: ..\contrib\i2pd.conf; DestDir: {userappdata}\i2pd; Flags: onlyifdoesntexist
-Source: ..\contrib\subscriptions.txt; DestDir: {userappdata}\i2pd; Flags: onlyifdoesntexist
-Source: ..\contrib\tunnels.conf; DestDir: {userappdata}\i2pd; Flags: onlyifdoesntexist
-Source: ..\contrib\certificates\*; DestDir: {userappdata}\i2pd\certificates; Flags: onlyifdoesntexist recursesubdirs createallsubdirs
-
-[Icons]
-Name: {group}\I2Pd; Filename: {app}\i2pd.exe
-Name: {group}\Readme; Filename: {app}\Readme.txt
-
-[UninstallDelete]
-Type: filesandordirs; Name: {app}